akrometrix DIC Bedienungsanleitung
DIC
User Manual
DIC User Manual
Page 2 of 19 40-5000-01500 Rev. A
Akrometrix Proprietary
Information
No reproduction, adaptation,
or translation without prior
written approval.
Warranty
The information contained in
this document is subject to
change without notice.
Akrometrix makes no warranty
of any kind with respect to this
information.
Akrometrix shall not be liable
for any direct, indirect,
incidental, consequential, or
other damage alleged in
connection with the furnishing
or use of this information.
Trademark Credits
Microsoft®, Windows®,
Excel®, and Notepad® are
registered trademarks of
Microsoft Corporation.
TherMoiré® is a registered
trademark of Akrometrix, LLC.
DIC User Manual
40-5000-01500 Rev. A Page 3 of 19
DIC User Manual
Contents
1Introduction.................................................................................................................4
1.1 Overview................................................................................................................4
1.2 Warnings and Precautions.....................................................................................4
1.3 System Configuration.............................................................................................6
1.4 Technical Support..................................................................................................6
2Basic System Set-up..................................................................................................8
2.1 System Set-up.......................................................................................................8
2.2 System Alignment................................................................................................11
2.3 Calibration............................................................................................................13
2.4 System Removal and Shutdown..........................................................................13
3Troubleshooting .......................................................................................................15
3.1 Failure to Initialize the Cameras ..........................................................................15
Appendix A - Miscellaneous Information..................................................................19
A.1 Equipment Ratings...............................................................................................19
A.2 Transport .............................................................................................................19
A.3 Maintenance........................................................................................................19
DIC User Manual
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1Introduction
1.1 Overview
The DIC system is an add-on module to complement the Akrometrix TherMoiré AXP
or Studio PS400. It is designed for measuring both in-plane and out-of-plane
displacements of samples as a function of temperature. The module uses a full-field,
non-contact optical technique called digital image correlation (DIC). Samples are
measured inside a computer-controlled oven chamber with a temperature range from
ambient to 300°C.
This manual describes the system hardware, image acquisition software (DIC), and
data analysis software (Vic-3D). The DIC software is specific to the AXP and requires its
system hardware to operate. The Vic-3D software may reside on the AXP computer or
operate as a stand-alone application on a remote computer.
Before operating the system, the user should carefully read Section 1.2, which
describes safety and health hazards associated with the system. The TherMoiré AXP or
Studio PS400 system contains a high temperature oven, motorized sample stages, and
electrical systems, all with the potential to injure if used or maintained improperly.
Section 1.3 identifies system components and controls. Section 2 describes basic
procedures for system setup and shutdown.
Appendix A describes the DIC system assembly, individual components and
optical alignment of those components. It has recommended procedures for
maintenance, storage, and transport of the DIC system. This section also contains
equipment ratings, technical support material, and a description of software file types.
1.2 Warnings and Precautions
1.2.1 Health and Safety Hazards
The DIC module is designed to work with the AXP or Studio PS400 system. Do
not operate the DIC system separately. Doing so can cause potential damage of
the DIC components.
When installing or removing the DIC assembly, place the Akrometrix-supplied
oven shield on top of the oven glass lid to protect the glass from any object that
could be dropped from the DIC assembly.
Always keep the six bolts on the triangle supports while installing or removing the
DIC assembly.
During installation or removal of the DIC unit, the user is required to lean inside
the AXP or Studio PS400. Overhead obstacles such as the light source can
cause slight head injury. During installation, be careful and aware of any
overhead obstacles.
Turn off both light sources prior to disconnecting the optical fiber bundle.
Operation with the light on may cause severe discomfort due to the operator
being exposed to a very bright light with the optical fiber bundle disconnected.
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40-5000-01500 Rev. A Page 5 of 19
1.2.2 AXP/Studio PS400 System Operating Precautions
Do not install additional software on the system computer, change computer
system settings, or upgrade system software or hardware without consulting
Akrometrix. Unauthorized modifications can cause problems in normal system
operation.
Handle the glass grating with care. Make sure there is adequate clearance
between sample and grating before closing the oven lid. If the grating is
discolored by smoke or other contamination, clean the grating using
recommended procedures before performing another heating cycle.
Do not touch the quartz heating elements in the IR heater bank. Do not operate
quartz heating elements except in the horizontal position. These actions can
reduce element life.
1.2.3 Warnings and Notes in this Manual
Warnings and Notes are marked throughout the manual with these icons:
Figure 1.1 Warning Icon
Figure 1.2 Note Icon
Warnings are specific health hazards for the operator or potential sources of system
damage. Notes highlight system limitations or automatic responses that may require
corrective action by the operator for successful operation.
DIC User Manual
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1.3 System Configuration
Figure 1.3 DIC System Diagram
Figure 1.3 shows the layout of the DIC system in the AXP or Studio PS400.
Essentially, the system consists of two 1.4 megapixel CCD cameras mounted above the
system’s computer controlled infrared oven. Unlike Shadow Moiré, DIC does not require
an optical grating. In fact, this grating must be removed in order for the technique to
work. The double pane glass window remains to insulate the oven and provide a
viewport into the thermal chamber. The system light source remains the same as well
and provides diffuse illumination for the sample under test.
1.4 Technical Support
For technical support, contact Akrometrix:
Akrometrix
2700 NE Expressway
Building B, Suite 500
Atlanta, GA 30345
404-486-0880
404-486-0890 (fax)
http://www.akrometrix.com
When contacting Akrometrix, please provide the system serial number, the version
numbers of the Akrometrix software being used, a description of the problem or
question, and contact information for reply. If the question concerns a particular
measurement or analysis, please provide electronic copies of the phase images,
Light Source
CCD Cameras
Monitor
Computer
Sample
Oven
Sample
Support
Servo
Motor +
Stage
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40-5000-01500 Rev. A Page 7 of 19
reference images, and final results and a description of data acquisition and/or analysis
conditions. If the problem concerns changes or failure in general system operation,
please describe any events or system modifications that occurred immediately before
the problem arose.
DIC User Manual
Page 8 of 19 40-5000-01500 Rev. A
2Basic System Set-up
2.1 System Set-up
2.1.1 Loading the DIC System
Warning: The user should carefully read Section 1.2
(Warnings and Precautions) before installing the DIC
module into the system.
1. Ensure that any other modular systems, such as the MP10 Fringe Projection
System, have been completely removed per its removal instructions. The
instructions to follow assume the system is in its basic shadow moiré state.
2. Ensure that the TherMoiré system has been shut down.
3. Remove the grating from the oven lid before loading the DIC system. The DIC
system cannot be operated with the grating in place.
4. Place the oven shield on top of the oven lid. Then, carefully push the oven
shield back until it touches the air knife as shown in Figure 2.1.
Warning: The DIC Camera Sub-Assembly is heavy.
Accidentally dropping the whole assembly or
components from it could damage the components
themselves or the glass lid. The use of the Oven Shield
will help prevent both types of damage.
Figure 2.1 Oven Shield over the TherMoiré Oven Lid
5. Select the appropriate Camera Support Plate for the desired field of view
(FOV). The widest plate is used for the largest FOV and vice versa (Figure
2.2). When aimed at the same spot these plates should give the camera system
a stereo angle of ~15°.
Air Knife
Oven Shield
Oven
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40-5000-01500 Rev. A Page 9 of 19
Figure 2.2 Large, Medium, and Small FOV Camera Adapter Plates
6. Attach the cameras to the plate using two ¼-20 button head screws (Figure
2.3). Only the widest mount has a front and back side. The back side has
counter-bored holes so that it can sit flush against the Common Crossbar
Mount Support. Their alignment is not critical at this point as they can be
adjusted to view the same point once the assembly is installed.
Figure 2.3 Camera Sub-assembly, Backside
7. Place the DIC assembly support (Common Crossbar Mount Support with two
Carriage Assembly Support Triangles) onto the two glide rails located on two
sides of the oven lid (Figure 2.1). Align the whole assembly such that the
cameras will be viewing the sample location. Attach them with three ¼-20
aluminum thumbscrews each. Make sure that the triangles are seated over the
glide rails properly before tightening the thumbscrews.
~88 x 66 mm
~66 x 48 mm
~45 x 34 mm
DIC User Manual
Page 10 of 19 40-5000-01500 Rev. A
Figure 2.4 DIC AXP Carriage Support Assembly
8. Slide the Camera Sub-assembly over the two pins located at the center of the
Common Crossbar Mount Support. There are three possible camera positions.
Choose the position which corresponds with the desired FOV. Some rocking
may be required to fully seat or unseat this assembly as the bushings and pins
are a precise fit.
9. Once the Camera Sub-Assembly is located on the pins and is flush with the
Common Crossbar Mount Support, place two aluminum thumbscrews into the
appropriate holes (marked by red circles in Figure 2.5) and tighten by hand.
10. Attach a trigger box cable and firewire cable to each camera. Secure them to
the top of the Common Crossbar Mount Support using the supplied Velcro strap
as shown in Figure 2.5.
Warning: Plugging or unplugging the 1394b firewire
cables while power is on can potentially damage 1394b
firewire devices.
Glide Rails (2)
Aluminum
Thumbscrews
(3) on Each Side
Common Crossbar
Mount Support
Support Triangles (2)
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