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Miniature specimen techniques |
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Written by Vivek Kant
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Saturday, 07 July 2012 09:16 |
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Miniature specimen techniques enable the measurement of a materials strength and performance in support of estimating the service life of pressure equipment.


Samples are removed from in-service components, for example steam pipes, and these samples are referred to as “Scoops” or “Boat-shaped” samples and are taken from the surface of components without effecting the component integrity and capability.
Specific test specimens are then cut from the sample in support of tests such as tensile, bend, compression, fatigue, impact and hardness. The test results are used to quantify the material's current strength and mechanical robustness.
Through periodic scheduled sampling and testing, the results data can be fed into finite analysis software and lifetime and performance predictions can be made using extrapolation techniques.
Tinius Olsen has developed a series of testing systems capable of carrying out the tests on the miniature specimens. Miniature specimens require exacting testing techniques to ensure accurate application of testing forces and measurements of movement (Strain) under load. In particular extraneous loading forces not in the precise axis of required loading would cause erroneous errors in results and effect measurements of uncertainty across batches of same type tests and between interval batches over time.
As an example Tinius Olsen implements the tensile test of miniature specimens using a linear bearing system to ensure no “out of axis” loading;
Pictured Tinius Olsen model 161-002 Miniature Steel Tensile Dumbbell shaped specimen holder which incorporates a linear bearing system.


Using a Tinius Olsen system application of the tensile load, measurement of strain and reporting of results is all conducted under software control.
For similar stories & applications, please visit our partner sites here. |
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Last Updated on Monday, 09 July 2012 08:37 |
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Written by Vivek Kant
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Tuesday, 15 May 2012 06:42 |
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Another new innovative testing system has been released by our engineering design teams working with medical industry professional who want to perform tensile tests on a range of materials for producing Synthetic Skin. This new accessory is a vertically mounted, temperature controlled, fluid bath that becomes a saline tank. This particular application used with a Tinius Olsen 5KT single column testing machine and a pair of medical grade 50N capacity vice grips that keeps the specimens in a saline solution while the tensile test is performed. The bath is filled from a reservoir tank and the system has multiple sensors to control the filling of bath and temperature of the Saline Solution. What makes this test fixture unique is that it allows tensile tests to be performed on specimens that are underwater, with no change to the testing machine.
For more information on various types of tests, Please click here. |
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Last Updated on Wednesday, 20 June 2012 06:27 |
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Demonstration facility in India |
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Written by Vivek Kant
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Tuesday, 21 February 2012 09:24 |
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Our New Demonstration facility is OPEN for Business. We have opened this new facility to support the tremendous efforts
of the Aimil Sales and Service teams across India. On display, and available for demonstration, we have:

- Grips and Attachments for L series.
Additionally, the demonstration facility is equipped with high speed internet access which will allow Tinius Olsen and Aimil staff to give
• online demonstrations to prospective customers,
• online customer training,
• online sales and service team training. |
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Tinius Olsens NEW Video Extensometer |
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Written by Tinius Olsen
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Thursday, 25 March 2010 14:54 |
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Tinius Olsen has introduced a single camera video extensometer. It delivers point-to-point real-time video processing capable of achieving and exceeding ASTM E83 Class B1 and ISO 9513 Class 0.5 with continuous measurement through tensile break or compressive rupture, performance leading competitors cannot match. The video extensometer’s camera (Model LESC) is available for low extension materials. The New Tinius Olsen video extensometry solutions include nearly every type of application for metals (including thin wire), elastomers, textiles, plastics, and composites. This includes use with temperature chambers (from -70°C to +600°C), chemical, radioactive, and other harsh environments, very small samples, high strain, cyclic testing, and component testing.
The LESC is supplied with a 25 mm FOV lens. It offers a better than 1/100,000th field of view. The algorithms in Tinius Olsen’s new system, through sub-pixel interpolation, deliver an extremely high accuracy of 0.5%. Other key features include inclusion of compact, cool lighting, automatic gauge search and find, a letterbox test specimen for memory conservation, multiple longitudinal and traverse gauge lengths, and portable options for use across multiple materials testing machines (including those made by other manufacturers).
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Last Updated on Wednesday, 20 June 2012 06:27 |
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