Archive for the ‘ASTM D256’ Category

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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Notched Samples: Impact and Shear Testing

September 7, 2017

Tensilkut is known for high quality, accurate machines for preparing flat and round tensile bars.  But we also build machines for notching specimens, which is one of the hardest things to accomplish.  For Impact specimens in accordance with ASTM A370 for metal bars, we offer the Impactkut, a fast, accurate and durable machine which broaches the notches with a single stroke of the 24″ long

Charpy impact specimen, Izod impact specimen, Iosipescu Shear Test ssample

From top: ASTM A370 Impact specimen, ASTM D256 Fiberglass Impact specimens (2), ASTM D5379 Shear Test Specimen

broach tool.

ASTM D256 specimens are used for testing plastic or composite impact specimens; the Impactmill notches those specimens in one pass through the machine.

For Iosipescu Shear Test specimens in accordance with ASTM D5379 or ASTM D7078, the V-Mill notches both sides of the specimen quickly, with the notches perfectly aligned.  This machine was developed in response to customers in the aerospace industry, who were among the earliest to suffer the difficulties of preparing these notches.

Visit our website at the links above for these specific machines, or  for a summary of all of our products.