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501
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ISO 13939
Describes a method of comparing the performance test results of foil journal bearings, which are lubricated by air (gas) and supported by hydrodynamic force generated by the rotation of the rotating shaft.
502
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How is double lap shear testing performed?
Specimen preparation
Specimens are prepared according to standardised dimensions.
503
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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.
504
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How to perform a box crush test
A successful box crush test requires consistent specimen preparation, suitable equipment and precise execution.
505
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Manual controls and switches
Switches come in many different configurations... toggle, rotary, mercury, push-button, reversing, relay and circuit breaker.
506
Case study
Spring design and manufacture
Requirement
Longcroft Engineering design and manufacture springs, from prototypes and hand-made custom designs, to high-volume production.
507
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Difference between tangent modulus and other moduli
Tangent modulus vs secant modulus
While both describe stiffness, their calculation methods differ:
508
[Page extract]
How is the 135° peel test performed?
Specimen preparation
Test specimens are usually strips cut from the sealed edge of a tray or container.
509
[Page extract]
How the single rip trouser tear method works
The method takes its name from the specimen shape, where a single cut partway into the sample creates two ‘legs’, similar to the shape of a pair of trousers.
510
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What is the trapezoidal tear test?
The trapezoidal tear test is a mechanical method used to determine the tear strength of flexible sheet materials.
511
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ASTM B571
This practice covers simple, qualitative tests for evaluating the adhesion of metallic coatings on various substances.
512
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ASTM F2255-05
This test method is intended to provide a means for comparison of the adhesive strengths of tissue adhesives intended for use as surgical adhesives or sealants, or both, on soft tissue.
513
Event
Essentials of grip & fixture selection in force & torque testing
For a test to work, the test system needs to properly interface with its specimen.
514
Event
Webinar: Essentials of Grip & Fixture Selection in Force & Torque Testing
For a test to work, the test system needs to properly interface with its specimen.
516
Event
Materials Testing: Theory and Practice Pt. 2
Materials testing is often the last step in the manufacturing process. Yet, quality is the result of both the process and the material. If the material that goes into the product is inadequate or defective, then the product may be deficient or faulty.
517
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BS EN 17665
The Directive (EU) 2019/904 “on the reduction of the impact of certain plastic products on the environment” introduces the requirement that plastic caps and lids of single use plastic beverage containers up to 3 l capacity shall remain attached to the c
518
[Page extract]
ISO 5628
Specifies three test methods for determining the bending stiffness of paper and paperboard. The test methods differ in the type of loading mode, thus giving rise to the two-point, three-point and four-point bending test methods.
519
Event
Materials Testing: Theory and Practice Pt. 2
Materials testing is often the last step in the manufacturing process. Yet, quality is the result of both the process and the material. If the material that goes into the product is inadequate or defective, then the product may be deficient or faulty.
520
Event
Medical Device Testing: Torque testing of Child Resistant Closures (CRC) with 21 CFR Part 11 compliance
Torque testing of Child Resistant Closures (CRC) with 21 CFR Part 11 compliance
521
Event
Medical Devices: Torque testing of Child Resistant Closures (CRC) with 21 CFR Part 11 compliance
Torque testing of Child Resistant Closures (CRC) with 21 CFR Part 11 compliance
522
[Page extract]
Cord, rope and netting
Cord, rope and netting all rely on their inherent strength to perform the essential tasks of tying, lifting and dragging.
523
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Springs
Springs are elastic objects used to store mechanical energy and they change shape in response to external forces, returning to their original shapes when the forces are removed.
524
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Tensile deformation and its significance
Tensile deformation occurs when a material is stretched by an axial load, causing it to elongate.