Welcome to our new Instron Community Blog hosted by Instron. It is a compilation of the freshest, brightest, most-talented minds that Instron has to offer. The world of materials science is so vast and encompasses the broadest range of industries, materials, and challenges that no one person can possibly possess all the knowledge required to be the resident expert – or master of materials science. It takes a small army behind the scenes collaborating and sharing technical know-how, experiences, and ideas to present the most accurate, relevant, and timely information to you – our readers.
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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 10:10 AM
Nov 21, 2014 10:10 AM
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 OnNov 14, 2014 10:10 AM
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 OnNov 05, 2014 10:10 AM
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 OnNov 05, 2014 10:10 AM
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 10:10 AM
Oct 13, 2014 10:10 AM
Elayne Schneebacher OnOct 08, 2014 10:10 AM
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 OnSep 25, 2014 10:10 AM
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 OnSep 23, 2014 10:10 AM