Test & Measurement

Strain Gage for Highly Elastic, Low-Modulus Materials

This gage surpasses conventional foil technology, measuring elastic strain range greater than 100 percent while reducing measurement error. Armstrong Flight Research Center, Edwards, California Researchers at NASA’s Armstrong Flight Research Center have developed and tested a new strain gage that makes significant strides in the state of the art, particularly salient given the requirements of new structural components on aerospace vehicles. Conventional foil technology presents a significant shortcoming for these vehicles, since it is limited to less than 20 percent strains while newer vehicles include highly elastic, low-Young’s-modulus materials that require higher strain measurements. For example, fabric-reinforced rubbers and elastomers have a nonlinear stressstrain relationship with extreme rupture strains — some greater than 500 percent.

Posted in: Briefs, Test & Measurement

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The Ultimate Tool for Characterizing Materials during Mechanical Tests and Validating FEA during Component Tests

Digital Image Correlation Technology (DIC) is a non-contact 3D measurement tool that measures deformation and strain during material testing. DIC is a single system that replaces strain gages, accelerometers, LVDT’s, string potentiometers, extensometers, laser trackers, and surface scanners. The results are full field, and presented as an experimental representation of a finite model.

Posted in: On-Demand Webinars, Materials, Test & Measurement

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Top 5 Trends in Product Development and Test Engineering

Take a look at this ebook and see how high-Tech OEMs are Improving Product Quality and the Bottom Line. Whether you are a product designer, engineer, or executive, learn more about Test Best Practices from Averna; what works, what doesn’t and what the trends are.

Posted in: White Papers, Software, Test & Measurement

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Considerations for Choosing Temperature Measurement Devices

Temperature is the physical variable most often measured in industrial processes. Selecting the sensor and measurement device to match a specific process is extremely important, and knowing the various options is the first step to optimizing temperature measurement. There are a variety of reasons we need to know the temperature of an object or a process — to prevent product damage, ensure sterilization, determine biological health, ensure mixture blending, control chemical reactions, or ensure drying, curing, and outgassing, to name just a few. Temperature measurement can also be a regulatory requirement; for example, the Food and Drug Administration (FDA) requires temperature monitoring of food and drug products.

Posted in: Articles, Test & Measurement

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Surface Measurement

AMETEK Taylor Hobson (Leicester, UK) offers the Surtronic Duo surface measurement system, which consists of the Surtronic R-Series roundness and form tester (for bearing parts) and the Surtronic S-100 portable roughness tester with USB connectivity. The instrument uses a diamond stylus that is drawn across a part with a motorized traverse mechanism. Vertical movement of the stylus is detected by a piezoelectric pickup that converts mechanical movement into electrical signals. The signals are digitized and sent to a microprocessor for calculation of surface parameters. One-button operation produces a full set of traceable measurement results, including a detailed profile graph. Display and traverse modules can be operated as one unit or separated for difficult-access applications; Bluetooth connectivity allows wireless communication between them.

Posted in: Products, Manufacturing & Prototyping, Test & Measurement

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Carbon Monoxide Monitors

The AQM-103 series of carbon monoxide monitors from OMEGA Engineering (Stamford, CT) are designed to measure CO concentration, humidity, and air temperature. The CE-compliant devices feature a large LCD display that shows CO level, humidity, temperature, date, and time with programmable high alarm and audible/visible LED warning light for high CO concentration. This monitor is suited for indoor air quality (IAQ) diagnosis and HVAC system performance verification.

Posted in: Products, Manufacturing & Prototyping, Test & Measurement

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Electronic Micrometer

Paul N. Gardner Co. (Pompano Beach FL) introduced the Fowler Xtra-Value II electronic micrometer with a choice of measuring range, and an LCD with an inch/metric switchable resolution. A switchable resolution of 0.00005" and 0.001 mm, and an accuracy of 0.00016"/0.004 mm, are provided. Carbide measuring faces provide long life and wear resistance. A ratchet thimble applies consistent force for repeatability between users. The instrument features direct RS-232 output, and absolute and incremental modes.

Posted in: Products, Manufacturing & Prototyping, Test & Measurement

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