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What is R-Value?

R-value (also known as “Plastic Strain Ratio”) is a measurement of the drawability of a sheet metal. Simply put, it measures the resistance of a material to thinning or thickening when put tension or compression. R-value is a very important material property to understand for materials that will be formed into various shapes in their end use. When testing in accordance to popular standards such as ISO 10113 or ASTM E517, R-value is required.

Posted On Dec 27, 2012 09:30 AM

Engaging with Our Readers: Survey Findings

Two weeks ago we included a survey within TechNotes asking our readers to take a few moments to give us feedback on the Instron Community Blog. We received a great response and various comments on what you would like to read about. Everyone who responded will soon receive an Instron Community blog t-shirt!

Posted On Feb 21, 2012 10:10 AM

Damage Tolerance: Is it Important to You?

One main topic in composites is “damage tolerance”. Physical testing of wind turbine blades is such an expensive proposition that virtual testing is needed as much as possible – to this end, small-scale flaw testing on a materials testing system is extremely helpful to understand and predict how the larger system will behave in service…

Posted On Feb 16, 2012 10:10 AM

Going to MD&M West on Valentine's Day?

If you're attending MD&M West in Anaheim, CA, be sure to stop by our booth (#2478) and visit with our crew: Karl Malchar, Theresa Smith, Jim Ritchey, Elena Mangano, and Chuck Gleason.

Posted On Feb 14, 2012 10:10 AM

Free Whitepaper on Mechanical Testing of Medical Implants

Implants and the materials used for their production undergo extensive tests, which include the evaluation of the static and dynamic mechanical properties of the raw materials, components, and systems. Many of these tests are internationally standardized; other testing procedures are specific to a given application. In all cases, advanced testing instruments and clamping fixtures along with flexible, programmable testing software help in the determination and analysis of the relevant data.

Posted On Feb 10, 2012 10:10 AM

30 Years and Counting

This month, we're featuring Randy Riddle, one of our very own Application Engineers. Not only is he a family man, a grandfather to three beautiful granddaughters, and the Mayor of Grove City, PA since 2004, but he has found the time to fit in 30 years of service at Instron.

Posted On Feb 08, 2012 10:10 AM

Predicting the Properties of Virtual Materials

Historically, the properties of any new material have had to be determined empirically. It can take many years to transition a material from discovery to a commercial product, which is too slow, given the range of urgent problems that advanced materials can help us solve.

Posted On Jan 31, 2012 10:10 AM

Grip it Right

Gripping a specimen correctly is important if you want to acquire accurate test data. To most test operators, this is second nature.

Posted On Jan 31, 2012 10:10 AM

Creation of a New Generation of Testing Instruments: Part 2

Last week, we introduced a little bit of history into our blog by discussing the need to develop a testing instrument that could accurately test the new thermoplastic material of parachutes back in the 1940's .... Below, we finish the conversation by talking about the technology developed more than 50 years ago.

Posted On Jan 24, 2012 10:10 AM