Question

Problem 2: The bonded joint below is loaded with 1000 lb as shown. The joint is 0.5in wide and bonded with 0.010" thick bondline of EA9394 epoxy. Calculate the factor of safety against flat-wise tensile failure of this bond. EA9394 has lap shear strength of 4200 psi and a tensile strength of 6675 psi. =1in

Answer 1

Applied load = 1000 lb

length of joint = 1 in, width of joint = 0.5 in

Area of the bond = length*width = 1*0.5 = 0.5 in²

we have ,

σ yield permissible

$\sigma$_yield = 6675 Psi,

$\sigma$_permisible = applied load/area = 1000/0.5 = 2000 lb/in² = 2000 Psi

therefore FOS = 6675/2000 = 3.3375