Archive for August, 2017

ASTM D638 Type IV Test Specimens

August 31, 2017

ASTM D638 Type IV is a small tensile specimen used in testing plastics.  It’s a difficult sample to cut, because it has both an inside and outside radius.

ASTM D638 Type IV tensile bars

Tensilkut Engineering makes Master Templates which will work with any Tensilkut I or Tensilkut II to prepare samples in accordance with ASTM D638 Type IV. Each template is sized with a top bar which matches the height of the control head for the Tensilkut machine with which it will be used.

Tensilkut Master Templates 50-92, 50-93 and 50-94 for preparing rubber test specimens in accordance with ASTM D412 Die C: Available for use on Tensilkut I and Tensilkut II models.

Tensilkut Master Templates 50-92, 50-93 and 50-94 for preparing rubber test specimens in accordance with ASTM D412 Die C: Available for use on Tensilkut I and Tensilkut II models.

50-94 Tensilkut Template for ASTM D412 Die C

50-94 Tensilkut Template for ASTM D412 Die C

For more information on the ASTM D638 Type IV and other Tensilkut Master Templates, visit our website.

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More Ways to Follow Us

August 30, 2017

Tensilkut is now on Twitter @TheTensilkut and Google+.  Follow us in order to receive notification of new blog posts.

Tensilkut test bars

Some of the bars cut on Tensilkut machines include ASTM D638 Type I tensile bars, ASTM D412 Die C tensile bars, ASTM D1855 Type L Tensile-Impact specimens, ASTM D256 Impact specimens, and ASTM D5379 Shear Test Specimens.

The Original Tensile Sample Preparation Solution

August 29, 2017

The Tensilkut I is the original machine designed to prepare tensile and other test specimens from a wide variety of materials.  This precision machine is based on the unique concept of utilizing super high cutter rotation speeds to achieve dramatic reductions in chip load and cutting pressures; the Tensi8lbit produces 1000 cuts per second with the individual chips becoming fine shavings.  This high speed shearing action eliminates cold working or heat induced distortion to the sample edges.  Precise test specimens can be Tensilkut milled form aluminum, steel, stainless, titanium, pliable plastics, glass filled laminates, and a wide variety of other materials.  The configuration of the specimens is traced from a precision master template to achieve contoru duplication to with plus or minus .001″ (.025mm).

Dogbone sample cutter Tensilkut

10-68 Tensilkut I for preparation of flat tensile specimens

Contact us or visit our website for more information.

V-Mill Demonstration

August 28, 2017

For the testing of composites, few samples are harder to make than the shear test specimen, whether for the ASTM D5379 V-Notched Beam Method sample, or the ASTM D7078 V-Notched Rail Method sample.  In response to demand for an easier way to notch these blanks, Tensilkut Engineering developed the V-Mill I, which employs a custom diamond coated wheel to accurately complete the notch without tool marks or deformation, while maintaining the tight tolerances, including depths and angles, required for a successful test.

This is a video demonstration, which first explains the principles behind the machine, followed by the actual notching of a carbon fiber specimen.

The specimen finished during this demonstration, along with two others made from different materials, are shown here.

ASTM D5379 Iosipescu Shear Test specimens prepared on the V-Mill

ASTM D5379 Iosipescu Shear Test specimens prepared on the V-Mill

Please visit our website for more information on the V-mill, or fill out the form below for answers to your specific needs (sorry, but we had to remove the form due to a spammer in Slovakia filling it out 20 times per day).

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.

A Blast From The Past

August 7, 2017

Recently, while browsing the Tensilkut Ancient History file, our catalog from October 1, 1956 appeared.  It was a simple affair, with a heavy sheet as front and back cover, and a single sheet describing the entire Tensilkut line, consisting of the Tensilkut (one model only) and its template.  The cover was adorned with a four-color photograph, glossy, of course (at a time when color photography was less common and rather expensive).

Tensilkut I

The cover of the original Tensilkut catalog, from October 1, 1956!

How far we have progressed today, to our line containing numerous models of the Tensilkut I, Tensilkut II and CNC Tensilkut III for preparing flat tensile specimens, along with the Tensilgrind for high hardness flat samples, and machines for round and notched test specimen preparation!

Visit our website at www.tensilkut.com to see how greatly our line of equipment has expanded, and how we can assist you with your test specimen preparation needs.

Composite Tensile Test Sample Preparation

August 2, 2017

Recently, a customer sent us some composite strips to be cut into ASTM D638 Type I tensile samples.  We used the Tensilkut II, and the process was very fast and easy.

Tensilkut machines are sized for location in your testing laboratory, to be used by technicians without machining experience.  The Tensilkut II is a floor model, manually operated machine; table model Tensilkut I machines are also available for labs with less space available.  Visit our website at www.tensilkut.com or fill out the contact form below for more information on how Tensilkut can make your tensile specimen preparation easier!