Longitudinal Compression Test
The longitudinal compression test was performed as per ASTM D3410. Fig. a shows longitudinal compression test specimen equipped with strain gauge to measure strain and modulus installed in the machine. The stress-strain diagram (Fig. b) shows linear behavior and brittle failure under compression. Fig. c shows the mode of failure of the tested specimen. Failure is characterized by multiple longitudinal cracks. Three-part failure code as per ASTM D3410 is SGV, L-long splitting, G-gauge, and V-various.
Specimen in test machine
Longitudinal compression stress-strain diagram
Failure mode of longitudinal compression specimen