January 26, 2017 - 8:55pm - This photo shows multiple Micro-Measurements’ CEA- Series rectangular rosette strain gages applied to a structural ring used on the Ariane Launch Vehicle.  These rosettes were used to record strain which was later reduced to maximum and minimum principal strains along with direction.  A 3-element strain gage rosette is the way to measure the state of stress due to combined load conditions.Application Photo - Ariane Launch Vehicle
May 10, 2017 - 8:27am - Semiconductor strain gages installed along with a Micro-Measurements foil strain gage.  The highly stable foil strain gage is used to calibrate the semiconductor strain gages.Calibration Bar for Semiconductor Strain Gages
May 10, 2017 - 8:27am - When ice skaters leave the ice for jumps and landings, they experience very high stresses along the blade.  The forces upon landing can be as great as eight times their actual weight.  Doing this over and over can lead to stress fractures in the foot, back of hip areas.  With Micro-Measurements optical stress measuring technique, PhotoStress, the ice skate blade designs can be optimized to reduce stresses on the body.Photostress Analysis of an Ice Skate Blade
May 10, 2017 - 8:28am - Resolving the reasons for a part failure can sometimes be challenging, especially when a Finite Element Analysis (FEA) appears to show that the stresses should not cause failure.  Sometimes real loading conditions can be different than the anticipated loads used in developing the FEA model, and this situation is instantly revealed by Micro-Measurements Photostress.  In this photo, a Photostress analysis of a real part under real loads revealed that a mounting hole was placed in a highly stressed location, thus weakening the part.  The solution to the problem was just as easily revealed by noting several low stress locations where the hole could be located without weakening the part.FEA Validation by PhotoStress
May 10, 2017 - 8:28am - This photo illustrates what can be achieved by a skilled strain gage installer.  Here, a Micro-Measurements EA-06-008CL-120 strain gage has been trimmed to fit and bonded to a small diameter wire.  A load and unloaded check of zero-return on your instrumentation will tell you if the installation is good and functioning correctly.  Strain Measurement on a Small Wire
May 10, 2017 - 8:28am - Since the 1980s, automobiles have been using plastic fuel tanks in place of steel tanks.  Over time, a gas tank may become brittle and fail. When this happens, gas cam leak from the automobile causing a negative effect on fuel efficiency and potentially a fire hazard. With PhotoStress, such failures can be prevented and corrected during the design phase.

Photostress Analysis of a Fuel Tank
May 10, 2017 - 8:28am - A Micro-Measurements EA-XX-008CL-120 strain gage (0.008 inch gage length), trimmed to fit and installed on stainless steel.  Note that trimming part of the foil pattern is not advised by Micro-Measurements, but may be okay as long as the installed strain gage exhibits proper zero-return.008CL Strain Gage, Trimmed
May 10, 2017 - 8:28am - Micro-Measurements strain gage installed on a medical tool.F1-B5 Medical Tool with Strain Gage Installed
January 1, 2000 - 12:02am - This photo is the hallmark of a properly installed Micro-Measurements EA-Series strain gage.  Note the 3-wire, ¼-bridge connection of the instrument cable to the bondeable terminal.  Solder connections are kept as small as possible to improve fatigue life and elongation capability of the strain gage.  The thin, enameled, solid copper wire is routed from the strain gage perpendicular to the maximum strain, and the wire is looped to decouple strain transfer to the wire.Properly Installed Strain Gage Using a Bondeable Terminal
January 1, 2000 - 12:07am - Shown is a small, EA-13-031EC-120 Micro-Measurements strain gage bonded to a cast aluminum part, ready for application of a protective coating and subsequent strain measurements.  Notice that the excess backing (matrix) was trimmed so that the strain gage could be fit on the part.  Also note that the rough, cast surface was sanded smooth in the vicinity of the strain gage location; this is correct surface preparation procedure for installation on rough surfaces.EA-13-031EC-120 Strain Gage on Casting
January 1, 2000 - 12:25am - This photo shows Micro-Measurements’ EA-Series strain gages installed in areas of stress concentrations on a piston.  An analysis, such as shown, allows designers to optimize the piston for both strength and mass.  A wide variety of measurement situations required the use of different types of strain gage patterns.  Strip gages are used in areas where a measurement of strain gradient is needed.  To compare with a Finite Element Analysis (FEA) model, strain gage rosettes are utilized so that both the direction and magnitude of the maximum and minimum principle strains can be measured under all load conditions.  Shear gages are also utilized.  These strain gages are bonded using M-Bond 600 adhesive.  134-AWN wire is used so that the wire can be sealed to the surface of the piston and connecting rod, and is able to withstand the high G-forces encountered during a test run of the engine.  Though not shown, a protective coating, such as M-Coat GA-61 can be applied in a thin layer and will protect the gage installation from the hot oil environment.Extensive Stress Analysis of a Piston
March 27, 2007 - 10:36am - One of the smallest strain gages for general purpose stress analysis use.  The Micro-Measurements EA-XX-008CL-120 strain gage.EA-XX-008CL-120, Tiny Stress Analysis Strain Gage
August 25, 2014 - 7:53am - Strain gages installed on the reclaimer screw shaft: two full-bridges in shear patterns (torque) and.
two half-bridges in linear patterns (bending)MMCS11 - Fig 5a
September 21, 2015 - 5:00pm - Shown is a Micro-Measurements circular diaphragm gage installed on the diaphragm of a pressure transducer.  Diaphragm gages are special, full-bridge strain gages, designed for constructing pressure transducers.  Also note the use of colored, 134-AWN wire which is useful in keeping track of the power and signal corners of the Wheatstone bridge while wiring the installation.Diaphragm Pressure Transducer
October 13, 2015 - 2:10pm - The Strain Gage Hole Drilling method (ASTM Standard E837) is a widely accepted method for determining residual stress in a part or structure.  Micro-Measurements has the strain gage rosettes, installation kits, RS-200 Milling Guide, and strain indicators needed for a residual stress measurement.Residual Stress in Welded Pipe
February 4, 2016 - 11:54am - This photo shows Micro-Measurements dual-shear strain gages installed in a shear pin transducers.  Identical dual-shear gages are installed on both sides of the shear web shown, and then wired to form a full-bridge.  Micro-Measurements M-Bond 610 adhesive is typically used to install strain gages in the highest quality transducers and load cells.Shear Pin Transducer
March 15, 2016 - 8:54am - A very nicely installed set of Micro-Measurements strain gages, ready for final protective coating and subsequent strain measurements.  Note the use of bondeable terminals as an anchor point and transition to heavier gauge instrumentation cables. Rosette and Uniaxial Strain Gage Installation
March 16, 2016 - 2:03pm - The diaphragm of this pressure transducer is relatively large in diameter, so it uses several single grid strain gages.  Micro-Measurements has a Tech Note (TN-510) all about diaphragm pressure transducer design.  In this photo, note the use of resistors near the bondeable terminal (three of them).  These resistors are used to create a balanced bridge (zero output), temperature compensation, and modulus compensation to improve the overall accuracy of the transducer.Large Diaphragm Pressure Transducer
January 26, 2017 - 6:18pm - Strain gages installed at various stress concentrations on an automotive coolant pump for design and FEA validation.  The gages are installed using the correct materials for elevated temperature and the coolant/water-mixture environment.  The cable used is 336-FTE with etched Teflon insulation to ensure a good seal with the combination of M-Coat D covered with a layer of M-Coat B Nitrile Rubber for chemical resistance.Coolant Pump Design Verification
January 26, 2017 - 6:20pm - Here, two EA-06-015EH-120 strain gages are installed on a dental implant.  Though two gages are used on opposite sides, this installation is not a half-bridge.  Instead, the two gages are wired in series as a quarter-bridge.  This arrangement provides automatic sensitivity only to the axial strain, while cancelling unwanted strains due to bending.  Self-temperature-compensation number (STC) was not critical since temperature changes did not occur during the course of the strain measurements.Compressive Strain on a Dental Implant
January 26, 2017 - 6:24pm - A Micro-Measurements full-bridge diaphragm strain gage utilizing radial and tangential grid lines is installed on the thin diaphragm of a pressure transducer.  Wiring is completed and ready for cable and protective coating application.Diaphragm Pressure Transducer
January 26, 2017 - 7:22pm - Micro-Measurements’ CEA-Series strain gages are installed on a gun mount for use in field testing and design validation.Design Verification of Gun Mount
January 26, 2017 - 7:32pm - Micro-Measurements’ EA-06-40CBY-120 strain gages are installed on concrete in a nuclear reactor.  It is interesting to note that the 4-inch [102mm] 40CBY patterns are laid out at 0°-45°-90° angles to form rectangular rosettes.Biaxial Strain on Concrete – Nuclear Reactor
January 26, 2017 - 7:35pm - CEA-06-032UW-350 strain gage bonded to a reed valve.  Following strain gage installation, the device was calibrated in terms of millimeters of tip deflection, providing a means to dynamically measure the deflection of the reed valve while installed on an engine.Use of Strain Gage for Monitoring Carburetor Reed Valve
January 26, 2017 - 8:17pm - This photo shows Micro-Measurements dual-shear strain gages installed in a shear pin transducers.  Identical dual-shear gages are installed on both sides of the shear web shown, and then wired to form a full-bridge.  Micro-Measurements M-Bond 610 adhesive is typically used to install strain gages in the highest quality transducers and load cells.Shear Pin Transducer
January 26, 2017 - 8:25pm - Micro-Measurements’ CEA-Series strain gages installed on the post support of a sign board along a California highway.  The gages were installed for long-term monitoring of strain/stress, primarily due to loads produced by high wind velocity.  Notice that the installation is complete except for the final application of a protective coating.  The base coat of M-Coat F butyl rubber is shown correctly applied under the 322-DJV cable, so that the final top coat of butyl rubber will fully encapsulate and seal the cable and around the strain gages.Monitoring Long-Term Strains on a Highway Sign Support
March 3, 2017 - 3:42pm - This photo shows Micro-Measurements’ C2A-06-G1350-120 (could also be a C2K-06-G1350-350 for 350Ω) installed on a printed circuit board for strain measurements according to IPC/JDEC-9702A.  Adhesive is M-Bond 200.  A complete strain gage application kit is available, containing all materials needed to install the pre-cabled C2A-Series gages, the BAK-200 Kit.Printed Circuit Board Application Per IPC/JDEC-9702A
March 24, 2017 - 7:50pm - Shown is a full-Torsion bridge on a valve spring constructed using two EA-06-062TV-350/E strain gages from Micro Measurements.  Also used in the installation is a CPF-38C bondeable terminal, 134-AWP wire, and 330-FTE Teflon-insulated cable.  After installation, the valve spring can be compressed to a known force and the force equated to the output of the strain gage half-bridge to form a calibration.Valve Spring Calibrated for Force Measurement
October 5, 2016 - 5:28pm - Some load cells are very expensive.  In cases where a load cell is damaged, it is often possible to replace the strain gages and calibrate the load cell.  This image shows a balance that was reworked by Vijay Kumar of Dynatec in India.Loadcell Reworked
May 16, 2017 - 11:23am - An older photo documenting the applications of strain gages to a horse shoe and to a horse's hoof.  Testing was being done to validate the design of a lighter horse shoe intended to reduce the stress and cracking of the horses foot while training and racing.Strain Measurement on a Horse Shoe 1
May 16, 2017 - 11:23am - Brave man with a hot soldering iron attaching cables to the strain gages on a horse hoof.  This would be a good application for C2A-Series precabled strain gages.Strain Measurement on a Horse Shoe 2
September 30, 2015 - 3:00pm - Micro-Measurements Advanced Sensors are designed and manufactured in a wide range of patterns for production of precision transducers.  Shown here are two examples of linear diaphragm patterns used in the production of precision pressure transducers. Advanced Sensors Diaphragm Gages
March 15, 2016 - 10:01am - Shown is a Micro-Measurements EA-06-031RB-120 strain gage rosette bonded at the corner of a component that attaches to the printed circuit board(PCB) via a ball grid array (BGA).  The strain measurement is then used to see if the PCB can be processed, mounted, and packaged within the strain limits defined in IPC/JDEC-9702A.

Rosette on a Printed Circuit Board
March 16, 2016 - 1:53pm - This photo shows a Micro-Measurements J2A-XX-S1425-35B full-bridge strain gage used to form a simple axial force transducer.  Full-Bridge gages such as the S1425 allow single-surface gaging on transducers that do not require the highest accuracy possible.Full Bridge Strain Gage Used to Make a Simple Axial Force Transducer
March 18, 2016 - 11:54am - These molds show the two simple steps to install a Micro-Measurements EGP-5-350 (or EGP-5-120) Concrete Embedment strain gage.  The mold on the left shows the embedment gage suspended in the correct position to measure strain due to axial loading of the concrete cylinder.  The cylinder on the right shows the mold being filled with concrete.  EGP embedment gages in field structural monitoring applications would typically be suspended within the rebar structure prior to the concrete being poured.Concrete Embedment Strain Gage
December 12, 2016 - 4:34pm - This is a custom strain gage designed and manufactured by Micro-Measurements for large area strain averaging on asphalt core samples.  There is a grid for measuring hoop strain, one for axial strain, and a shear half-bridge for measuring torsional strain.  All strain gages measure the average strain under the area of their sensing grids, so these large grids correctly average on the non-homogenous asphalt material.Custom Gage for Strain Measurement on Asphalt
December 14, 2016 - 3:22pm - This photo shows a Micro-Measurements C2A-06-031WW-350 bonded to a thin walled steel pressure vessel.  A 3-element rosette allows the measurement of both the maximum and minimum principal strains, as well as the direction of the principal strains at the gage location.Thin Walled Pressure Vessel
August 4, 2015 - 2:46pm - Micro-Measurements Bridge Completion Modules (BCM) are used here to complete the entire Wheatstone bridge comprised of a single-grid strain gage and the three precision resistors of the BCM.  Doing so in this case allows a much lower noise level by routing the two high impedance signal wires and two high level voltage excitation wires through the slip ring.  Note that this would still be called a ¼-bridge strain gage installation since there is one active (strain gage) arm of the 4 arms of the Wheatstone bridge.Wheatstone Bridge Completion Module
May 22, 2017 - 4:07am - In printed circuit board testing, sometimes it is desired to know the strain applied to a component as the board is flexed.  This photo shows a Micro-Measurements EA-XX-015DJ-120 strain gage trimmed and bonded to a surface mount capacitor.Strain Gage on a Capacitor