Posts Tagged ‘test samples’

To Cut Straight Strips

September 12, 2017

Straight strips are a very valuable commodity in the laboratory.  In addition to needing a straight strip as the basis for cutting a test specimen, whether tensile, compression or another test, the straight piece is necessary for flexural testing, and is very valuable for other tests, including hardness testing.  The Tensilsaw is a very convenient way to cut strips from small plaques of plastic, fiberglass, composites, glass laminates and other non-metallic materials.

Visit our website or our YouTube channel for more video demonstrations of the Tensilsaw and our other equipment.

 

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Tensilkut Catalog, Circa 1955

August 9, 2017

In this day of instant electronic communication, it’s hard to believe that 60+ years ago, not only was everything mailed, but Tensilkut’s catalog, when it arrived in the mailbox, contained a tensile test bar which had been cut on the Tensilkut.

Tensilkut catalog with aluminum tensile sample

The 1955 Tensilkut catalog included a drawing of the only tensile bar we made at the time, along with an actual specimen!

I don’t imagine the founder of Tensilkut ever imagined a time when we could not only send information to customers nearly instantly, but also a time when we’d be able to make videos available for people to see whenever they wished.  Despite sea changes in communication, the need for his original machine remains very real – and at least one of the machines made in his first couple of years remains in service today.

Demonstration of the Tensilkut II

June 23, 2015

The Tensilkut II is used to easily prepare flat tensile, compression, flexural and other specimens from metals and non-metallics.  This machine is designed for operation in the testing lab by technicians without previous machining experience.

The starting blank is inserted into the Tensilkut Master Template, and the clamping screws are tightened as shown in this video.  The micrometer dial on the Tensilkut control head is set to its starting position, and a series of light passes are taken to cut the material from each side of the specimen.  When the correct tensile specimen dimensions are achieved, the micrometer dial will stop turning, thus preventing cutting an undersized test specimen.  After removing the completed ASTM E8 or other specimen from the master template, the tensile bar is ready for immediate testing.

ASTM D5379 Shear Samples

August 16, 2013

Recently, Tensilkut was asked to develop a method to prepare samples in accordance with ASTM D5379 for Shear Test Samples with a V-notch on either side.  These samples are to be used with the Iosipescu Shear Test Fixtures, as supplied by major testing machine manufacturers.  This test method for composites was developed during the 1980s, and the ASTM specimen was finalized in 1993.  The standard specimen is 3″ by .75″, and can be up to 1/2″ thick.  Identical notches are cut into either side of the specimen for accurate testing.  Tensilkut Engineering has developed a new machine specifically for preparing samples to ASTM D5379.

For use in Iosipescu test fixtures

For use in Iosipescu test fixtures

ASTM D5379 Shear Sample

ASTM D5379 Shear Sample

V Notched Shear Sample

V Notched Shear Sample

Specimens in accordance with ASTM D7078 can also be prepared on this new machine.  Please contact us for more details on the new V-Mill for the accurate preparation of Shear Test Samples.