Comparison
DYNAMIC
COMPRESSION
Testing Machine:
Momentum-trapped
Split Hopkinson Bar
High Strain Rate : 15-25 x103 GPa/s
*Abalone*
Parallel σ = 534 MPa Perpendicular
σ =746 MPa
•Again abalone shows over twice the mechanical strength of compared shells
•Conch and giant clam have relatively similar strengths regardless of micro-organization
50% Fracture
probability Stress (MPa)
Giant Clam:
Parallel
σ = 160 MPa Perpendicular σ = 202 MPa
Conch:
Parallel σ = 360 MPa Perpendicular σ = 225 MPa