The Future is Forming

The Tool and Die Authority April 2010 Newsletter contained these articles:

Keeping U.S. Manufacturers Linked to the Alternative-Energy Supply Chain: Joe Brown
Die Damage at Coil Change: Peter Ulintz
Lean Misperceptions: Bob Quinn
Proper Documentation for Troubleshooting and Cost Justification: Drew Stevens

and from Danny Schaeffler of Engineering Quality Solutions (EQS)...
Specimen Shapes Shown in Sheet-Steel Specifications (or, Know Where the Numbers Come From)

When you order steel, you define the grade by ordering to a certain specification, such as ASTM A653 when asking for hot dipped galvanized drawing steel. The specifications include details of the properties that must be met, such as composition and mechanical properties, along with thickness and flatness tolerances. The specification also includes a description of how these parameters are measured. Here we address the dimensioning of tensile test specimens.


Dogbone Dimensions

Historically, tensile-test specimen dimensions have been defined by the country or regional standardization organization from which the specifications were published. These include ASTM (American Society for Testing and Materials), JIS (Japanese Industrial Standards), EN (Europäischen Normen), BS (British Standards), DIN (Deutsches Institut für Normung) and SEW (Stahl-Eisen-Werkstoffblätter).

One of three standard test-specimen shapes typically find use for tensile tests; all have a basic dogbone shape so that failure occurs in the reduced-width section.

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Labels: ASTM, blog, DIN, dogbones, EQS, JIS, Lubricant Testing, tensile

Posted by Engineering Quality Solutions on Monday, May 10, 2010 at 8:13 AM | Permalink |