ASTM D1414 (D 1414) covers multiple properties of O-Rings. Part of the specification includes tension testing for determining the breaking force, tensile strength, and ultimate elongation of an o-ring. The tension test is intended to be performed on a universal testing machine (tensile testing machine). If you are going to perform this test, you should read the entire specification from ASTM. This is a quick summary to decide if this test is right for you, and to point out what equipment you need to perform the test.
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Topics:
ASTM Tests,
rubber,
Tensile Test
One of the most common specifications that our customers follow is ASTM D882 which is the Standard Test Method for Tensile Properties of Thin Plastic Sheeting. This test is very similar to the common ASTM D638 test whereby plastic material is pulled until in breaks in order to measure elongation, tensile modulus, tensile yield strength, and tensile strength at break. However, it is designed specifically for thin sheeting and film less than 1 mm (0.04") thick.
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Topics:
ASTM Tests,
Plastic,
Tensile Test,
Film
To determine the breaking strength, elongation, etc. of threads, yarns, or other single strand textiles, ASTM D2256 is by far the most common specification that is followed. This is a relatively simple tensile test whereby thread is pulled at a constant rate of speed until it breaks. Please see the video below that shows how the test is performed:
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Topics:
ASTM Tests,
Textile,
Tensile Test
Biaxial - torsion and tension and compression universal testing example. There are many different products that require biaxial testing. Biaxial loading can be used to measure basic material properties and also the behavior of specific features of interest under biaxial loading conditions. For example, a company may want to test a spinal implant maintaining tensile or compressive force or axial displacement constant and increasing the torque or angle of twist. Another company may want to test a intramedullary fixation device by maintaining torque or angle of twist and increasing load or axial displacement. Many ASTM and ISO standards require biaxial testing.
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Topics:
Torsion,
Tensile Test,
Biaxial
Many different types of testing profiles can be used to test a syringe. There are ASTM and ISO standards, for example,
ISO7864 and ISO9626,
ISO7886, ISO8537 as well as individual company specified testing profiles. You may want to discover how much
force it takes the press the plunger with and without liquid, or you may want to determine how easy or difficult the
luer lock is to remove or to connect, or you may want to examine the pressure of the liquid when forced out of the
syringe at a high speed, and more. In this example, we filled a syringe with a needle hub attached by luer lock with water. We compressed the plunger through its 1.75 inches of travel. We were interested in measuring the average force required to push the fluid through syringe. To obtain an accurate load average measurement, we needed to ignore the "noise" at the beginning and end of the stroke. We programmed our machine to average the load between 0.5 - 1.5 inches of displacement. This syringe test was performed on an ADMET eXpert 7601,
Single Column, 1kN testing system equipped with an
eP Digital Controller and a syringe testing fixture. This test gave us information on the force required to compress the plunger to a certain position.
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Topics:
Compression Test,
Biomedical,
Tensile Test,
delivery device
This video shows an example of a Rubber Property Test - Adhesion to Flexible Substrate as specified in ASTM D413 (D 413) & ASTM D378 (D 378)
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Topics:
ASTM Tests,
rubber,
Tensile Test,
Adhesive
This test measures the force required to close a lid on a travel coffee mug. We used our eXpert 2610 universal testing machine to perform the test, but it would have worked just as well with one of our smaller single column eXpert 7601 or eXpert 5601 testers.
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Topics:
Compression Test,
Plastic,
Packaging
The International Tennis Federation (ITF) developed a specification that is used to determine the forward and return deformation characteristics of a tennis ball. Many conceptually similar tests can be used by companies who do not make tennis balls as this compression test is a good overall quality control check of many products - whether it be a basketball, football, soccer ball, golf ball, dog toy, etc.
To perform the test on a tennis ball, do the following:
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Topics:
Compression Test,
rubber
Two pieces of nonwoven fiber joined at the edges by sewn thread are pulled apart at a constant rate of speed to measure the maximum peak force of the seam. Video below:
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Topics:
Textile,
Tensile Test,
Packaging
This test stretches plastic medical catheter tubing until it fractures to measure its maximum elongation and tensile strength. We used our high elongation / low force eXpert 7601 single column testing machine equipped with a pair of bollard grips that are designed to hold tubular and cord type products in tension tests without creating premature breakage caused when using standard vise or wedge grips.
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Topics:
Biomedical,
Plastic,
Tensile Test,
delivery device
