One of the most common of all testing requirements is the determination of break strength.  Break strength is generally the tensile or compressive load required to fracture a sample. 

To determine the break strength you will need to define what a break is (break detector).  Generally, there are two common types of breaks:

• Sharp break

A sharp break is a swift significant drop in load.

• Percentage break

A percentage break is another form of break and is generally determined by the sample material and its relationship to load degradation from a peak load measurement.  For example, a material could have a load drop of 5%, but not represent a break.  In this case, a percentage break would need to be applied.  In a tensile test, the breaking load is the break strength.

Virtually any product or material will have a break strength characteristic.  Lloyd Instruments™ materials testing systems may be used to determine a break strength or to make a comparison of a break strength to a specification (pass/fail).

Other common results available using a Lloyd Instruments materials testing system for break strength are:

• Maximum Load at Break
• Deflection at Maximum Load
• Work at Maximum Load
• Stiffness
• Load at Break
• Deflection at Break
• Work at Break
• Chord Slope

Break strength testing can be carried out on a range of Lloyd Instruments materials testing machines together with NEXYGENPlus data analysis software when more comprehensive testing results are required.

Typical graph showing break strength test.

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