4pt bending calcs with crosshead displacement

calculation of crosshead (anvil) displacement, bending stiffness, K, bending structural stiffness, EI, modulus, E, stress and strain for 4-point bending with the measured crosshead displacement

[@feliperodrigues2487]

thank you so much my friend!!! I was needing something just like that to calculate deflection in a flexural test, from the machine crosshead displacement data, in my DIY 4 point bending test machine. I am trying to follow ASTM D6272 as close as possible, but i just did not have the money to buy expensive dial indicators with data loggers to measure the deflection at the centre of the sample. Your video will save me many hours in my project !!! Love and admiration from Brazil

[@pm993g]

Isn't EI bending rigidity, not structural bending stiffness?