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Tag Archives: scanning

1. Liberty of Poetry scanned by Artec Eva. Kent State team. From left to right: Nate Mucha, Robert Clements, David Hassler, Joshua Talbott, JR Campbell, Tammy Honesty, Steve Sawicki, Tetta Askeland and Alex Barnhart.

Exact Metrology Scanned “Liberty of Poetry”

Liberty of Poetry scanned by Artec Eva - 3d scan
Liberty of Poetry scanned by Artec Eva

From October 11, 2019 to April 26, 2020, the Ellis Island National Museum of Immigration in New York exhibited “Sisters in Liberty: From Florence, Italy to New York, New York.” The exhibit was a collaboration between Kent State University in Kent, Ohio and the Opera di Santa Croce, a nonprofit organization in charge of the Franciscan Cathedral Santa Croce. Through art and multimedia presentations, the exhibit looked to start an international conversation about the meaning of liberty and how the concept had evolved.

The exhibit featured an 80% to scale replica of Pio Fedi’s “Liberty of Poetry,” housed at the church. It is said to have served as the basis for the Statue of Liberty. “Liberty of Poetry” honors Giovanni Battista Niccolini, a poet who inspired and supported the Resorgimento the Italian struggle for self-determination.

With permission from the Vatican, Kent neuroscientist Robert Clements and Josh Talbott, both of whom have a background in 3D imaging, traveled to Florence to scan the statue over a three-day period using technology provided by Exact Metrology.

Different angle scan with Artec Eva - 3d scan
Different angle scan with Artec Eva.

Kent State University rented the Artec Eva scanner and Artec Studio software. Chris Lafferty at Exact Metrology provided the university with equipment, training and support. The Artec Eva, provided by Artec 3D, is used for making a quick, textured and accurate 3D model of medium sized objects. It scans quickly, capturing precise measurements in high resolution. Not only does it capture almost any type of object (including black and shiny surfaces), but it is used in numerous industries including quality control, heritage preservation, forensics, automotive, medical, aerospace and prosthetics. Artec Studio makes it easy to obtain accurate 3D models. It features an advanced smart mode that guides users through post-processing, automatically selecting the most effective settings for the data and producing a high precision 3D model. It offers best in class texture and geometry tracking, thus eliminating the need for targets on objects. Whether using Autopilot or manual mode, the software never compromises on precision. Furthermore, powerful algorithms process data in seconds and Artec Studio features a full range of advanced settings. Users can scan and process data on a tablet.

After scanning the statue, Clements and Talbott returned to Kent State to process 30 to 40 gigabytes of data and create a blueprint for a 3D printer.

Freshmade3D, a Youngstown-based start-up company, printed the replica in three sections, so the statues could be transported easily to New York. The statue was painted by a team of students at Kent State and combines sand and resin to replicate the original.

Commenting on this project, Chris Lafferty said, “This was a great experience for us as we got to see the finished product and how Exact Metrology contributed to this. We look forward to more collaborations like this in the future.”


Exact Metrology is an ISO 9001:2008 and AS9100 Certified Company 

Exact Metrology, with facilities in Cincinnati, OH, Moline, IL and Milwaukee, WI and affiliated offices throughout the country, is a comprehensive metrology services provider, offering customers 3D and CT scanning, reverse engineering, quality inspection, product development and 2D drawings. The company also provides turnkey metrology solutions, including equipment sales and lease/rental arrangements. 

Exact Metrology offers a complete line of portable scanning and measurement technologies as well as contract measurement for 3D laser scanning services, reverse engineering services, non-contact inspection, metrology services, and 3D digitizing. The company’s newest equipment includes a CT Scanner, the first in America being used for metrology rather than medical testing. Exact sells and rents metrology equipment solutions, in addition to providing testing as a service and application software training.

For information, please contact:

Steve Young
Exact Metrology, Inc.
11575 Goldcoast Drive
Cincinnati, OH 45249
Local: 513-831-6620
Toll free: 855-476-1431
www.exactmetrology.com
stevey@exactmetrology.com

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Exact Metrology Reverse Engineering Final Product

Exact Metrology Showcases Potential of Reverse Engineering

Exact Metrology Reverse Engineering CT ScanGreenery 33 is a company in Cincinnati, Ohio that produces creative and unique plant holders and pots.  The company donates 33% of their earnings to environmental protection agencies. One of Exact’s engineers is friendly with Greenery 33’s owner, so Exact Metrology participated in a marketing campaign aimed to show the process of reverse engineering and how it can used with various materials.

Exact Metrology Reverse Engineering Plant HoldersThe first step was to scan and have a digital copy of a physical skull.  Secondly, the skull was reverse engineered using Geomagic DesignX software and NURBS. Geomagic is a leading provider of 3D software to create digital models of physical objects for industries such as: archaeology, aerospace, medical and dental, tooling, foundry and sculpture and arts. The Geomagic Design X combines history-based CAD with 3D scan data processing, enabling users to create feature-based, edible solid models compatible with existing CAD software. NURBS, or Non-Uniform Rational B-spline is used to represent curves and surfaces. Next, surface analysis is performed with Geomagic Design X for parametric modeling. Afterwards, NURBS is inspected with a color map against the scanned data of Geomagic. Lastly, .stl files rendered in Keyshot 3D of the skull are placed in product shots for Greenery 33.

Exact Metrology Reverse Engineering Final ProductThis process took two days. By using reverse engineering, Exact Metrology showed Greenery 33 an efficient and cost-saving way of working with materials like plastic, glass and ceramic without physically reconstructing it.


Exact Metrology is an ISO 9001:2008 and AS9100 Certified Company 

Exact Metrology, with facilities in Cincinnati, OH, Moline, IL and Milwaukee, WI and affiliated offices throughout the country, is a comprehensive metrology services provider, offering customers 3D and CT scanning, reverse engineering, quality inspection, product development and 2D drawings.   The company also provides turnkey metrology solutions, including equipment sales and lease/rental arrangements.  

Exact Metrology offers a complete line of portable scanning and measurement technologies as well as contract measurement for 3D laser scanning services, reverse engineering services, non-contact inspection, metrology services, and 3D digitizing. The company’s newest equipment includes a CT Scanner, the first in America being used for metrology rather than medical testing. Exact sells and rents metrology equipment solutions, in addition to providing testing as a service and application software training.

 

For information, please contact:

EXACT METROLOGY, INC.
Dean Solberg
20515 Industry Avenue
Brookfield, WI 53045
Local: 262-533-0800
www.exactmetrology.com
deans@exactmetrology.com

 

EXACT METROLOGY, INC.
Steve Young
11575 Goldcoast Drive
Cincinnati, OH 45249
Local: 513.831.6620
Toll Free: 866.722.2600
www.exactmetrology.com
stevey@exactmetrology.com

Continue reading

Exact Metrology Helps Retrofit Aircraft

Exact Metrology, a comprehensive metrology services provider, recently completed a job at Chicago Jet Group. Located in Sugar Grove, Illinois, the company started in 2003 with the idea of providing the highest level of professionalism and attention to detail in the corporate aviation industry.  Chicago Jet Group specializes in aircraft acquisition, aircraft management, charter services, pre-purchase evaluation, aircraft avionics, aircraft consulting and aircraft maintenance. The company was retrofitting older Dassault Falcons avionics and needed a CAD model of the panel to see how it would fit.

Joe van der Sanden, application engineer from Exact Metrology, scanned the panel with an 85 series Hexagon Romer Absolute Arm. The Absolute Arm 7-axis delivers tactile probing and laser scanning in an ergonomic package. It is the best choice for ease of movement and ease of measurement. The flagship RS5 laser scanner offers high-speed 3D scanning Retrofit Aircraftfor surfaces and features on a wide range of finishes and materials with less investment than the RS6. Furthermore, the RS5 laser scanner boasts a wide and horizontally-oriented laser scan line and fully-automatic exposure settings, making general purpose scanning functionality simple to apply regardless of application. In addition, with mid-range width at 115 millimeters, the laser scanner line of the RS5 makes digitizing large surfaces simple and quick.  The RS5 can be easily removed from the arm, allowing simpler and safer access to touch probing functionality in hard-to-reach areas. Thanks to repeatable mounting, it can be remounted without recalibration. Through the on-wrist OLED display screen of the Absolute Arm 7-axis, the RS5 allows for measurement feedback and settings adjustment at the point of measurement for a clear improvement to workflow productivity.

Then, dimensions were obtained in Polyworks Inspector. The Polyworks software suite covers the complete product development cycle, from part and tool design and prototyping down to final inspection of assembled parts. Polyworks Inspector™ is the industry-standard toolbox for product engineering, assembly guidance and final inspection.

Reverse engineering was performed using Geomagic Design X. This software combines history-based CAD with 3D scan data processing and enables the creation of feature-based, editable solid models compatible with existing CAD software.  Geomagic Design X allows users to re-use existing designs without having to manually update old drawings or re-measure and rebuild a model in CAD. This software is easy to learn and use, for it uses familiar history-based tools found in all major CAD products.

Chicago Jet Group was very pleased with the work performed by Exact Metrology and they would be happy to work with them again.  A senior avionics technician at the company said, “This will save us months of measuring and drafting.”


Exact Metrology is ISO, AS9100 Certified as well as FFL and ITAR Registered.

Exact Metrology, with facilities in Cincinnati, Ohio, Moline, Illinois and Milwaukee, Wisconsin, plus affiliated offices throughout the country, is a comprehensive metrology services provider, offering customers 3D and CT scanning, reverse engineering, quality inspection, product development and 2D drawings.   The company also provides turnkey metrology solutions, including equipment sales and lease/rental arrangements.  

For information, please contact:

EXACT METROLOGY, INC.
Dean Solberg
20515 Industry Avenue
Brookfield, WI 53045
Local: 262-533-0800
www.exactmetrology.com
deans@exactmetrology.com

 

EXACT METROLOGY, INC.
Steve Young
11575 Goldcoast Drive
Cincinnati, OH 45249
Local: 513.831.6620
Toll Free: 866.722.2600
www.exactmetrology.com
stevey@exactmetrology.com

Continue reading

Exact Metrology Provides Updates on PolyWorks Inspector™ and Hexagon Romer

Exact Metrology Free Training VideosExact Metrology, a comprehensive metrology service provider, recently published informational videos on PolyWorks Inspectorand Hexagon Romer Absolute Arm on the company’s YouTube channel at https://www.youtube.com/user/ExactMetrology/videos.

A new feature in the PolyWorks Inspector™ is multi-piece editing. Users can now make changes in one piece that can be propagated to other pieces. If a user has multiple pieces, they can make changes like creating, editing features, alignments, reporting items, etc.  Then, these changes can be transmitted to past and future pieces/templates, create custom propagations or just apply the changes to the current piece. After choosing the propagate option, the user sees the changes in the other pieces and/or templates including report(s) or report items.

Another update of PolyWorks Inspector™ pertains to augmented GD&T. Center point features can now be reported with more capabilities. These include circularity, flatness, perpendicularity, etc. Users can also see MIN/MAX deviations and can view the color arrow deviation tags.

An online tutorial shows how to make sure the Hexagon Romer Absolute Arm is still in calibration. First, the bar artifact needs to be placed correctly to scan it. The ideal location is centered with the main axis of the arm at a distance away where it will be just below the elbow when the arm is extended out. To secure the bar, use pre-drilled tapped holes. They accept simple machinist fixturing to hold it in place.  C-clamps can also be used to secure the bar to a rigid table. When doing a length checkout, only the 15 mm master probe should be used.  Next, the user needs to open RDS Data Collector. Used with Hexagon Romer Absolute Arm, the software allows the operator to check the accuracy of the arm and probes and calibrate/align the probes and scanner as necessary. To start probing, move the probe to the first position. The probe needs to be properly seated in the conical feature at each end of the bar. Following the prompts in RDS, move the probe to the end conical features and pull the trigger to record a point. Once ten positions have been recorded, RDS will display the results. The MIN/MAX values should be below the standard values for the type of arm being used.


Exact Metrology is ISO, AS9100 Certified as well as FFL and ITAR Registered.

Exact Metrology, with facilities in Cincinnati, Ohio, Moline, Illinois and Milwaukee, Wisconsin, plus affiliated offices throughout the country, is a comprehensive metrology services provider, offering customers 3D and CT scanning, reverse engineering, quality inspection, product development and 2D drawings.   The company also provides turnkey metrology solutions, including equipment sales and lease/rental arrangements.  

 

For more information, please contact:

EXACT METROLOGY, INC.
Dean Solberg
20515 Industry Avenue
Brookfield, WI 53045
Local: 262-533-0800
www.exactmetrology.com
deans@exactmetrology.com

 

EXACT METROLOGY, INC.
Steve Young
11575 Goldcoast Drive
Cincinnati, OH 45249
Local: 513.831.6620
Toll Free: 866.722.2600
www.exactmetrology.com
stevey@exactmetrology.com

Continue reading

Exact Metrology Offers Customer Support through Training Videos

Exact Metrology, a comprehensive metrology service provider, is offering free training videos on the company’s YouTube channel. During these trying times, the company has started creating a series of training, tips and tricks, unboxing and product videos to provide additional information to their clients. The videos can be found at https://www.youtube.com/user/ExactMetrology/videos. Interested parties can bookmark the link and return often to see the latest creations.

The plan is to release three videos per week. The topics covered to date include PolyWorks Inspector, Geomagic Design X and 3D data collection tools such as Hexagon Romer Arms, Artec scanners and GOM CT scanners. Customers can learn more about these topics on the Exact Metrology website.  In addition, they can offer suggestions for upcoming videos by sending an email to training@exactmetrology.com.


Exact Metrology is an ISO 9001:2008 and AS9100 Certified Company 

Exact Metrology, with facilities in Cincinnati, OH, Moline, IL and Milwaukee, WI and affiliated offices throughout the country, is a comprehensive metrology services provider, offering customers 3D and CT scanning, reverse engineering, quality inspection, product development and 2D drawings.   The company also provides turnkey metrology solutions, including equipment sales and lease/rental arrangements.  

Exact Metrology offers a complete line of portable scanning and measurement technologies as well as contract measurement for 3D laser scanning services, reverse engineering services, non-contact inspection, metrology services, and 3D digitizing. The company’s newest equipment includes a CT Scanner, the first in America being used for metrology rather than medical testing. Exact sells and rents metrology equipment solutions, in addition to providing testing as a service and application software training.

 

For more information, please contact:

EXACT METROLOGY, INC.
Dean Solberg
20515 Industry Avenue
Brookfield, WI 53045
Local: 262-533-0800
www.exactmetrology.com
deans@exactmetrology.com

 

EXACT METROLOGY, INC.
Steve Young
11575 Goldcoast Drive
Cincinnati, OH 45249
Local: 513.831.6620
Toll Free: 866.722.2600
www.exactmetrology.com
stevey@exactmetrology.com

Continue reading

Exact Metrology Presents the RS-SQUARED Area Scanner

RS-SQUAREDExact Metrology, a comprehensive metrology service provider, now offers the RS-SQUARED area scanner. Manufactured by Hexagon Metrology and re-sold by Exact Metrology, this 3D scanner is compatible with all current generation Absolute Arm 7-axis systems. The RS-SQUARED allows users to perform high-speed scans of simple shapes and surfaces. It is best suited to the scanning of large parts with lower detail requirements, such as automotive parts.

The Absolute Arm 7-axis system delivers tactile probing and laser scanning in a uniquely ergonomic package. It is the best choice for high-end portable measurement applications. The articulating arm offers unparalleled ease of movement and ease of measurement.

RS-SQUARED is a white light scanner that uses the Absolute Arm system to position large square ‘tiles’ of 3D scan data. This removes the need for time-consuming application of reference markers or spray, or complex mechanical processes such as fringe projection that requires a stable environment. Up to 4 data tiles are captured every second, which combined with minimal set-up time, creates a scanning system capable of generating point cloud data in very little time. As with other Absolute Arm scanners, the RS-SQUARED can be easily removed and remounted without needing time-consuming recalibration processes due to an innovative repeatable mounting system.

RS-SquaredAdditional features include an extra-large scan ‘tile’ measuring 300 by 300 millimeters, providing a fast scanning solution by permitting coverage of a larger area. Furthermore, the RS-SQUARED area scanner is so fast that a surface that would usually take one hour to scan, can now be digitalized in 10 minutes. The retained touch probe functionality of the Absolute Arm ensures that high-detail geometric features can be captured at any time by removing the scanner from the arm and connecting it to a probe. Data feedback and settings adjustment at the point of measurement is built into the Absolute Arm 7-axis through its OLED on-wrist display, and the RS-SQUARED is integrated within this concept perfectly with scanner profiles selectable without putting down the scanner. The full scanning system accuracy of the RS-SQUARED area scanner and Absolute Arm 7-axis system is certified according to ISO 10360-8 Annex D.

The RS-SQUARED area scanner represents a new direction for portable measuring arm technology, embracing the need for high-productivity by incorporating advanced white light scanning technology. Together with the Absolute Arm 7-axis, it offers the ultimate all-around portable measurement solution for medium-to-large sized components.

Exact Metrology is an ISO AS9100 Certified along with being FFL and ITAR Registered.

Exact Metrology, with facilities in Cincinnati, Moline and Milwaukee plus affiliated offices throughout the country, is a comprehensive metrology services provider, offering customers 3D and CT scanning, reverse engineering, quality inspection, product development and 2D drawings. The company also provides turnkey metrology solutions, including equipment sales and lease/rental arrangements.


For information, please contact:
EXACT METROLOGY, INC.
Dean Solberg
20515 Industry Avenue
Brookfield, WI 53045
Local: 262-533-0800
www.exactmetrology.com
deans@exactmetrology.com

EXACT METROLOGY, INC.
Steve Young
11575 Goldcoast Drive
Cincinnati, OH 45249
Local: 513.831.6620
Toll Free: 866.722.2600
www.exactmetrology.com
stevey@exactmetrology.com

Continue reading
Clean workspace

Exact Metrology Provides Helpful Workplace Tips During Social Distancing

Jason Kleinhenz

Jason Kleinhenz received a biomedical engineering degree from the University of Cincinnati. He is currently the training and marketing manager at Exact Metrology.

Exact Metrology, a comprehensive metrology service provider, shares helpful safety tips for metrology workers during the COVID-19 pandemic. These tips are courtesy of Jason Kleinhenz, Exact Metrology marketing and training manager.

With much of the workforce operating from home, keeping up with quality inspection and reverse engineering is difficult during this time. However, there are solutions to counteract this problem. Some companies employ several of these tactics daily, but in these trying times they are much more relevant to maintain effective production.

If you are in the workplace, follow all the stated guidelines. These include staying 6 feet away, washing/sanitizing touched surfaces and washing your hands. Also remember to clean the objects you’re working with such as data collection tools and computers.

Only one person should collect the data from the object(s). That person is responsible for handling the objects and the data collection tools. Of course, the designated person also needs to clean and sanitize all objects, tools and surfaces.

Workers must save and upload data sets (and/or workspaces) to the cloud. Due to security threats, a company’s IT team should use a virtual private network (VPN) and/or file transfer protocol (FTP). This reduces the chances of data being hacked or stolen.

At home workstation

At home workstation

Have another person, or a team, work separately to download (receive) the data sets, or workspaces and process them. They will have their own safety procedures in place (essentially the same as the data collector). If possible, the processing person(s) should write programs at the same time the data is collected. This saves time and money as two operations are occurring at the same time. Most likely, this is not possible in reverse engineering projects. However, in quality inspection projects, this is a massive time-saving practice.

Communicating between the collector and processor(s) can be done quickly, and virtually, with online services like Skype and Zoom. The good old-fashioned phone works well for quick conversations too. There are some software packages that allow seamless workspace sharing between different people and teams such as a package through PolyWorks® by InnovMetric.

Clean workspace

Clean workspace

These techniques and tools can help companies reach their quality and reverse engineering objectives during social distancing. Exact Metrology is available to answer any questions about how to maximize efficiency or help with projects.

Exact Metrology is an ISO AS9100 Certified along with being FFL and ITAR Registered.

Exact Metrology, with facilities in Cincinnati, Moline and Milwaukee plus affiliated offices throughout the country, is a comprehensive metrology services provider, offering customers 3D and CT scanning, reverse engineering, quality inspection, product development and 2D drawings. The company also provides turnkey metrology solutions, including equipment sales and lease/rental arrangements.


 For information, please contact:

EXACT METROLOGY, INC.
11575 Goldcoast Drive
Cincinnati, OH 45249
Local: 513.831.6620
Toll Free: 866.722.2600
www.exactmetrology.com
info@exactmetrology.com

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Exact Metrology Offers Leica RTC360 Laser Scanner

Scanner features Leica Cyclone Field 360 and Leica Cyclone REGISTER 360

Leica laser scanner used in industrial environmentsExact Metrology, a comprehensive metrology service provider, is proud to announce the immediate availability of the Leica RTC360 3D laser scanner.  Manufactured by Leica Geosystems and distributed by Exact Metrology, these portable coordinate measuring machines are designed to measure large-scale objects. This laser scanner uses 3D reality capture.

3D reality capture is a process of scanning and capturing any site, for example, factories, buildings, crashes and crime scenes, in a 3D digital model, combining measurements and imagery. The model can be used for design and comparison purposes in various situations, capturing every detail with to-the-millimeter accuracy. This technology combines one-touch operation with portability and speed to deliver high levels of accuracy, automation and the ability to create 3D environments in a matter of minutes.

Leica laser scanner used in building construction environmentsMany industrial sites present inhospitable environments, where the health and safety of the employees and visitors are at risk due to temperature, corrosive materials, moving machinery and heavy objects. In addition, sites often have networks of pipes, tunnels, storage vessels and other structures that need to be examined. 3D reality capture permits complete site visualization for safety training. Site visibility also greatly improves plant management efficiency. Accurate measurements help designers create extensions without needing to visit the site and enhanced planning of workflow avoids disruptions.

Thanks to 3D reality capture, Building Information Modeling (BIM) experts save time and money as BIM processes become more efficient, from the accuracy of construction documentation to design and build quality assurance. The latest laser scanning technological developments improve understanding and documentation of the build environment through the use of millimeter-accurate laser scanning and High-Dynamic Range (HDR) imagery.  By using 3D reality capture, previews of data and imagery are viewable onsite directly from a tablet, enabling scans to be checked and verified before going to the office.

Leica laser scanner used at scene of car accidentUsing 3D technology is useful when a crash or crime scene requires quick analysis of the scene. Scanning creates a 3D environment that can be explored and analyzed, as well as documents the entire scene in detail.  Furthermore, fast scanning minimizes disruption and delays and removes scene degradation, thus providing jurors with credible evidence.  Security and site validation at public events are likewise very important and an accurate model of the area can highlight threats and risks not readily evident.

With a measuring rate up to 2 million points per second, automated targetless field registration (based on VIS technology) and automated transfer of data from site to office, the device and software greatly reduce time spent in the field and maximize productivity.

The scanner’s portable design and collapsible tripod fit into most backpacks. Low noise data allows for better images, resulting in crisp, high-quality scans that can be used in a variety of applications.

As part of the RTC360 solution, the Cyclone FIELD 360 links the 3D data acquisition in the field with the laser scanner and data registration in the office with Cyclone REGISTER 360. The user can automatically capture, register and examine scan and image data.


Exact Metrology is ISO, AS9100 Certified as well as FFL and ITAR Registered.

Exact Metrology, with facilities in Cincinnati, Moline and Milwaukee plus affiliated offices throughout the country, is a comprehensive metrology services provider, offering customers 3D and CT scanning, reverse engineering, quality inspection, product development and 2D drawings.   The company also provides turnkey metrology solutions, including equipment sales and lease/rental arrangements.  

For information, please contact:

EXACT METROLOGY, INC.
Dean Solberg
20515 Industry Avenue
Brookfield, WI 53045
Local: 262-533-0800
www.exactmetrology.com
deans@exactmetrology.com

 

EXACT METROLOGY, INC.
Steve Young
11575 Goldcoast Drive
Cincinnati, OH 45249
Local: 513.831.6620
Toll Free: 866.722.2600
www.exactmetrology.com
stevey@exactmetrology.com

Continue reading

Exact Metrology Discusses CT Scanning Technology For 3D Printed Work

Exact Metrology, a comprehensive metrology service provider, participated in a webinar on February 20, 2020. The general subject involved testing and inspecting parts that are 3D printed. Josh Schradin, a project manager at Exact Metrology, gave a presentation on industrial CT (Computed Tomography) for additive manufacturing.

A CT scan, also known as an X-ray Computed Tomography (X-ray CT) or a Computerized Axial Tomography scan (CAT scan) uses computer-processed combinations of several X-ray images taken from different angles to produce cross-sectional (tomographic) images or “virtual slices” of specific areas of a scanned object. This allows the user to see inside the object without cutting or damaging it. The basic components of a CT system are its X-ray source, the sample on a rotary table and a detector (see image 1).

How Exact Metrology XraysThe reconstruction process takes multiple images of the object at multiple angles or projections around the object. With a projection, users can analyze the part formation or look for defects. Once the complete projections are captured through a 360-degree rotation, the images are segmented into grayscale value pixels.  Since the same theoretical point was captured from multiple angles, they become 3D volumetric pixels, or voxels (See image 3). A voxel set features different colors based on density and grayscale value. A voxel grid is used to stich images together.

Magnification is also an important part of CT scanning.  Moving the object closer to the X-ray source provides a larger shadow, optimizing the resolution of the final image, while having an object closer to the detector provides a smaller shadow that decreases the final resolution.

Exact Metrology ScanApplications of CT scanning in the additive world include defect analysis/porosity, dimensional analysis, trapped powder, product content position, reverse engineering wall thickness, air gap detection and others. In defect analysis, exploring the complete volume of an object allows users to see defects that would normally go unnoticed. Volume of voids, or porosity, can be calculated to determine risk of mechanical failure.  Users can align the data to the CAD model, export the defects out and run finite element analysis and/or simulation. Many specs have a defect size limit. CT scanning assures that limit isn’t surpassed.

Exact Metrology Voxel SetCT data can be used to measure dimensions from a drawing to verify that a part is within specifications.  A color plot deviation to the nominal model is also helpful to verify a part is meeting specifications (see image 6). Many samples of a part can be run to determine a trend. In addition, a metal part can be scanned prior to heat treat and after heat treat to see what has changed. A heat map is also applicable for deviations in wall thickness and air gap.

Trapped powder can be located during the printing process either by magnification or using a color map that shows deviation to the nominal model (see image 8).

Exact Metrology Scan wih NURBS ModelReverse engineering is achieved with the NURBS model, which stands for ‘Non-uniform rational B-Splines.’ This model consists of a curve network applied directly to a mesh controlled by allowable fit tolerances (see image 10). The final surface skin represents the CAD surface used and can further facilitate downstream applications such as machining, FEA, build corrections etc. Applied to a watertight mesh, it will result in a solid model.

Product content positon allows manufacturers to audit their products and determine if embedded objects are placed properly.

Exact Metrology is an ISO AS9100 Certified along with being FFL and ITAR Registered.

Exact Metrology, with facilities in Cincinnati, Ohio, Milwaukee, Wisconsin and Moline, Illinois and affiliated offices throughout the Midwest, is a comprehensive metrology services provider, offering customers 3D and CT scanning, reverse engineering, quality inspection, product development and 2D drawings. The company also provides turnkey metrology solutions, including equipment sales and lease/rental arrangements. 


For more information, please contact:

For information, please contact:
EXACT METROLOGY, INC. 
Dean Solberg
20515 Industry Avenue
Brookfield, WI 53045
Local: 262-533-0800
www.exactmetrology.com
deans@exactmetrology.com

Steve Young
Exact Metrology, Inc.
11575 Goldcoast Drive
Cincinnati, OH 45249
Toll Free: 866-722-2600
Local: 513-831-6620
www.exactmetrology.com
stevey@exactmetrology.com

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Exact Metrology Scans Monument Circle in Indianapolis

Innovative, an ad agency in Indianapolis, was contacted by Downtown Indy Inc. to create a light projection at Monument Circle for Veterans Day. Located in the heart of downtown Indianapolis, it features the Soldiers & Sailors Monument and the Colonel Eli Lilly Civil War Museum. Downtown Indy Inc., the city’s nonprofit organization, received a grant from the Lilly Endowment for the show and the goal of the ad agency was to produce a projection show that will be image mapped on two buildings in the circle’s southwest quadrant. To accomplish this, Innovative became the creative content provider for Exact Metrology. 

Mesh data created by the Leica scanner

Mesh data created by the Leica scanner

Greg Hoeting, the application specialist at Exact Metrology, used a Leica P40 to collect point cloud data. Leica ScanStation P-Series 3D laser scanners are ideal for capturing 3D geometry of civil infrastructure, creating an as-built representation of large industry complexes, reconstructing crime scenes or generating 3D data for integration into Building Information Modeling (BIM). In addition, these laser scanners offer unsurpassed range and angular accuracy with low-range noise and survey-grade dual-axis compensation that form 3D color point clouds mapped realistically.

Next, Hoeting used Polyworks® to mesh the data and export a .stl file. The Polyworks® software suite maximizes productivity, quality and profit when integrating 3D measurement devices into the industrial manufacturing process. The software interfaces directly with major brands and technologies of single- point and point cloud 3D models through plug-in extension models. Furthermore, Polyworks® supports a wide array of native point cloud and polygonal model file formats.

Lastly, Hoeting used Leica Cyclone to align the color texture with a center point at the base of the monument. This point cloud processing software provides the widest range of options for 3D laser scanning projects in engineering, surveying, construction and related applications.

Exact Metrology scanned around the monument and several buildings such as: Novel Coworking Circle Tower, IPL, Guaranty Building, Salesforce Tower (Chase Tower portion). 

Exact Metrology is an ISO AS9100 Certified along with being FFL and ITAR Registered.

Exact Metrology, with facilities in Cincinnati, Ohio, Milwaukee, Wisconsin and Moline, Illinois and affiliated offices throughout the Midwest, is a comprehensive metrology services provider, offering customers 3D and CT scanning, reverse engineering, quality inspection, product development and 2D drawings. The company also provides turnkey metrology solutions, including equipment sales and lease/rental arrangements. 


For more information, please contact:

Steve Young
Exact Metrology, Inc.
11575 Goldcoast Drive
Cincinnati, OH 45249
Toll Free: 866-722-2600
Local: 513-831-6620
www.exactmetrology.com
stevey@exactmetrology.com

Continue reading