Rugged design extensometer for axial tensile testing of stranded wire requiring a long gage length device and the ability to measure axial elongation accurately on a specimen that twists when pulled. This design allows long measuring ranges, yet retains compatibility with electronics for strain gaged transducers. Meets existing ASTM class B-2 and ISO 9513, class 0,5 requirements for accuracy
Principle of Operation
During operation, the upper half of the extensometer pulls out of the main body. Tapered measuring beams activate strain gaged flexures within the unit. The units have hardened tool steel knife edges that are easily replaced. Quick attach kit (included) allows easy one hand mounting on specimen. Removal of the extensometer from the specimen prior to fracture, to avoid damage to the instrument, is strongly recommended.