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1251
Case study
Sachet compression test
Requirement
To compress six sachets of ketchup or mayonnaise until failure of the packaging occurred.
The peak compressive force was required as the test result.
1252
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Introduction to Delft tear testing
The Delft tear test is a specialised method for determining the tear strength of vulcanised rubber, thermoplastic elastomers and similar flexible materials.
1253
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Common challenges and solutions
Misalignment can cause uneven peeling forces.
1254
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Compression testing standards
Following recognised standards ensures test data is reliable and comparable. Standards specify specimen preparation, testing speeds, calculations and reporting methods.
1255
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Comparative analysis with other peel tests
Test type
Peel angle
Common applications
Advantages
1256
[Page extract]
ISO 4049
This document specifies requirements for dental polymer-based restorative materials supplied in a form suitable for mechanical mixing, hand-mixing, or intra-oral and extra-oral external energy activation, and intended for use primarily for the direct or
1257
[Page extract]
The 3-Point Bend test goes to Summer School
Both Dr. Cote and Grubbs agree that one of the highlights of their year is the Materials Science summer course for high school students, where they had students design their own candy composites.
1258
Event
Tensile Testing for Wiring Harness Connections Webinar
The only way of really knowing the strength of a crimped terminal is to pull it.
1259
[Page extract]
ASTM D7257-06
This test method of applying force may be used as a standard test to compare the characteristics of a given design of container/child-resistant closure system with a standard or to compare the characteristics of container/child resistant closure systems
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Application of standards in puncture testing
Standardised methods ensure test consistency and reliability across laboratories and production sites.
1261
Case study
Clothing button pull-off TTF test
Requirement
The customer was a supplier to major UK clothing retailer Marks & Spencer, who stipulate that all fasteners and attachments must be tested to failure.
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[Page extract]
BS EN ISO 376
BS EN ISO 376:2011 looks at the calibration of force-proving instruments used for the static verification of uniaxial testing equipment. These include tension and compression testing machines.
1263
Event
Webinar: Essentials of Adhesion/Peel strength testing
There is a reason people reach for duct tape as a fix for almost everything – adhesion strength.
1264
[Page extract]
How the strip method works
The strip method involves cutting a specimen to a precise width, typically 50 mm or 25 mm depending on the applicable standard, and mounting it in the grips of a tensile testing
1265
Case study
Railcar spring testing
Requirement
Seoul Metropolitan Railway Transit Corporation required a system for testing a variety of springs in their electric railcars. The springs range in size from 3mm to 100 mm in diameter.
1266
Case study
Rotary damper gear precision torque characteristics
Requirement
A global manufacturer and distributor of component parts that are used in products across many industries including transport, beauty, consumer goods and healthcare, came to Mecmesin with a challenging torque measurement applicatio
1267
Case study
Smoke grenade canister integrity
Customised engineering example
A manufacturer of smoke grenades required a means of testing the cap pull-off strength. The particular challenge was to grip the smooth metal cylinder for up to 5 kN of pulling force.
1268
Event
Texture Testing for Bakery Applications
The primary goal for using instrumentation to measure texture is to capture an objective value to something that is typically evaluated very subjectively. Texture cannot be controlled unless it measured in a consistent and repeatable manner.
1269
Page
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1270
[Page extract]
ISO 11070
Specifies requirements for introducer needles, introducer catheters, sheath introducers, guidewires and dilators supplied in sterile condition and intended for single use in conjunction with intravascular catheters specified in ISO 10555-1.
1271
Case study
Adhesive test on capsulated stoppers
Requirement
A capsulated stopper (T-top, Bar-Top or Altop®) is a natural or synthetic cork stopper where the end is glued into a cap of wood, PVC, porcelain, metal, glass or other material.
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ASTM D3359
These test methods cover procedures for assessing the adhesion of coating films to metallic substrates by applying and removing pressure-sensitive tape over cuts made in the film.
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Types of calculations handled
Mecmesin’s VectorPro software supports a wide range of test calculations, automatically derived from mechanical testing data:
1274
[Page extract]
ASTM D1578
Significance and Use
Test Method D1578 for testing any spun yarn for breaking strength is considered satisfactory for acceptance testing of commercial shipments since the method has been used extensively in the trade.
1275
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Introduction to tear resistance testing
Tear resistance testing is a critical mechanical property assessment for flexible materials such as plastics, elastomers, coated fabrics and textiles.