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1251
[Page extract]
Introduction to climbing drum peel testing
Climbing drum peel testing is a specialised method used to measure the adhesive strength between bonded materials, particularly in flexible-to-rigid substrate combinations such as aluminium skins bonded to honeycomb cores.
1252
[Page extract]
Students meet the Mecmesin MultiTest
Having spent time with the Mecmesin team and seen their material testers in action, WPI opted to invest in three Mecmesin MultiTest 2.5-dV testers.
1253
[Page extract]
The standard specifies the procedures for measuring the force required for needle penetration and the drag force as the needle travels through a simulated skin or tissue.
1254
[Page extract]
BS EN ISO 844
ISO 844 specifies a method of determining a) the compressive strength and corresponding relative deformation, or b) the compressive stress at 10 % relative deformation, and c) when desired, the compressive modulus of rigid cellular plastics.
1255
[Page extract]
What is Young’s modulus?
Young’s modulus - also known as the modulus of elasticity or elastic modulus - defines how stiff a material is when a force is applied.
1256
Event
Tensile Testing for Wiring Harness Connections
The only way of really knowing the strength of a crimped terminal is to pull it. This can reveal production problems, where strand nicks, incorrect crimp height, or effects from changes in terminal supply, may not be clearly apparent.
1257
[Page extract]
Real-time data analysis and reporting
Mecmesin’s software platform offers live monitoring and evaluation of test performance:
1258
[Page extract]
Measurement and testing methods
Techniques for measuring tangent modulus
Tangent modulus is measured during tensile or compression testing, w
1259
Page
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1260
[Page extract]
ISO 34-2 standards explained
ISO 34-2 specifies the Delft tear test procedure for vulcanised or thermoplastic rubber, ensuring testing is carried out under consisten
1261
Case study
Cosmetics tin label peel
Customised engineering example
Testing the adhesive peel strength of packaging labels applied at the post-production stage is more representative of their performance than at the label production stage.
1262
Case study
Cardboard beverage bottle carrier unfolding
Customised engineering example
A manufacturer of fully-enclosed cartons wanted to quality test the fold-out force for a variety of their designs, used mainly to package drinks bottles and cans.
1263
[Page extract]
Introduction to penetration and puncture resistance testing
Penetration and puncture resistance testing are essential for evaluating how well a material can withstand force from sharp, pointed, or blunt objects.
1264
[Page extract]
Industry-specific testing solutions
Strain at maximum stress testing is relevant wherever materials are expected to endure high loads without unacceptable deformation.
1265
Event
Fundamentals of Adhesion (Peel) Testing
There is a reason people reach for Duct Tape as a fix for almost everything – Adhesion Strength. From busted pipes to ripped furniture, the preference for a solution that “does not easily peel off” is the guiding principle for manufactures.
1266
Case study
Press stud popper pull-off test
Requirement
The customer was a supplier to major clothing retailer Marks & Spencer, who stipulate that all fasteners and attachments must be tested to failure.
1267
[Page extract]
Tension testing process
Tension testing is the most common method for evaluating tensile deformation and produces quantitative data on how materials behave under controlled pulling forces.
1268
Event
Essentials of Adhesion (Peel) Testing
There is a reason people reach for Duct Tape as a fix for almost everything – Adhesion Strength. From busted pipes to ripped furniture, the preference for a solution that “does not easily peel off” is the guiding principle for manufactures.
1269
[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.
1270
[Page extract]
Yield point testing methods
Yield point testing is most often performed using tensile testing, in which a specimen is subjected to a steadily increasing axial load until plastic deformation occurs.
1271
[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.
1272
[Page extract]
ASTM D2062
The method(s) in the standard along with those in Test Methods D 2051, D 2052, D 2053, D 2054, D 2057, D 2058, D 2059, D 2060, and D 2061 are a collection of proven test methods.
1273
[Page extract]
Comparison of flexure testing methods
Method
Loading direction
Best suited for
Advantages
1274
[Page extract]
Introduction to elongation and recovery testing
In industries working with textiles, rubber, elastomers, and flexible plastics, these properties are directly linked to product reli
1275
[Page extract]
ASTM F2878-10
This test method is used for determining the force required to cause a hypodermic needle to penetrate through protective clothing material.