Test and Measurement
- RAIL MONITORING
- RESIDUAL STRESSES
- FASTENER TESTING
- TEST LABS
- SHIP BUILDERS
- POWER GENERATOR/TURBINE MANUFACTURERS
- PRINTED CIRCUIT BOARD ASSEMBLY
- INFRASTRUCTURE/CONSTRUCTION/CIVIL ENGINEERING
Every item manufactured must survive its intended purpose, and also protect users for occasional unexpected loadings. This can be achieved by best guess but this can be a very expensive mistake if failure occurs. Combining techniques such as computer modeling with real-world testing achieves stronger, lighter, more efficient structures.
Improving long-term reliability, for example preventing latent failures in printed circuit board assembly, can increase customer confidence. Bridges are often tested during assembly and for long-term life prediction. Testing rock core samples can ensure suitable foundations are installed. Material properties can be ascertained in a laboratory to ensure suitability to a particular application. “Our expertise, your solution.”
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Virtually all manufacturing and fabricating processes introduce residual stresses into the manufactured object. Usually, residual stresses are detrimental, contributing to fatigue and other structural failures that are often unrecognized until after a malfunction or failure occurs. The hole-drilling strain gage method is a relatively simple procedure and has been standardized in ASTM Standard Test Method E 837. The general theory of making residual stress measurements is covered in Micro-Measurements Tech Note TN-503, “Measurement of Residual Stresses by the Hole-Drilling Strain Gage Method”
Our extensive collection of tutorial and informational videos on a variety of strain measurement topics.