Content for Materials Testing Professionals
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Explore best practices to better provide quantitative information about tear resistance, puncture resistance, peel strength, heat seal strength, and durability of materials used in flexible and rigid packaging, and finished packaging products.
Nov 24, 2014 03:10 PM
Instron has joined a new international group that is seeking to develop a best practice guide and test standards specifically for testing composites at high-strain rates.
As the automotive industry seeks ever-more-urgently to embrace composites, there is an increasing demand for testing composite material behavior at high-strain rates. The need for detailed data to inform crash simulation models first drove a renewed demand for equipment over the last 3 years, and now there is a need for international standardization in methodologies and data handling. The group’s aim is to facilitate generation and exchange of reliable and comparable test data in this highly challenging area.
Nov 21, 2014 03:10 PM
A universal testing system very simply measures 2 things during a basic mechanical test: force (via the load cell) and displacement (via the crosshead encoder). To obtain a basic stress-strain curve, you might think that’s all you need. With the force measurement from the load cell, the cross-sectional area of the material can be used to calculate stress; and with the crosshead extension, the original distance between the grips or fixtures can be used to calculate strain throughout the test. How simple!
Elena Mangano On Nov 14, 2014 03:10 PM
Q: We have an MF30 Melt Flow Indexer and started running tests on various polymers in our lab. Some of the samples have a lot of air bubbles in them. I believe this is contributing to inconsistencies in melt flow values. How do we minimize this?
A: There are a lot of reasons you could be seeing air bubbles in the filament sample. Ultimately, it comes down to keeping the testing and cleaning processes as consistent as possible.
Elena Mangano On Nov 05, 2014 03:10 PM
The world of materials testing is changing
- materials are getting stronger, stiffer, and lighter
- test standards are becoming stricter
- testing labs are asked to perform more complex analytical tests
Leonardo Martinez On Nov 05, 2014 03:10 PM
When chemical companies invest in developing high-performance polymers—such as filled polyesters, PA, PC, LCP, and PEEK—to engineer automotive and electronic components, they could potentially experience issues with a high melting temperature during the injection molding phase. It’s crucial to understand that even if the mold filling has been successfully executed, the molded parts can still show significant failures, such as cracks or warps and aesthetic defects.
Oct 15, 2014 02:10 PM
We are proud to share that Meredith Platt, Director of Marketing & Emerging Markets for the Electromechanical Business, presented at the recent MEDTEC China event in September. As Instron has developed many insights working with our customers in the biomedical industry, Meredith discussed challenges that QC laboratories encounter when testing a variety of medical devices, ranging from stents to catheters to spinal implants.
Oct 13, 2014 02:10 PM
Instron interacts with many new product development labs that have a need to validate their new product or component design. Often part of this design validation requires mechanical testing. We have noticed a common need in these research and development labs to perform rapid "what if" analysis during design validation.
Elayne (Schneebacher) Gordonov On Oct 08, 2014 02:10 PM
Since the first materials testing machines were used for tensile testing of metals, one option of performing the test has been to control the rate at which you apply load to the specimen, or apply stress.
David Fry On Sep 25, 2014 02:10 PM
Manufacturing processes are moving away from using traditional bolts and rivets to using new, stronger adhesives to hold together materials such as composites and aluminum. With this increase in bonded manufacturing, it is more important than ever to accurately test the adhesive strength of bonds to prevent catastrophic failures.
Leonardo Martinez On Sep 23, 2014 02:10 PM