which statements are correct? Gc and K1c have different units and are related to each other by the tensile modulus.The relative values of K1c and yield strength determine whether a plastic fails in a brittlemanner.The stress concentration caused by a circular hole in a much larger plate is constantregardless of the hole size.Laminating rubber with thin steel sheets is a good way to increase the shear modulus parallelto the sheets.For rubbers, the entropy increases with tension and decreases with compression.A lower R value in a fatigue test of a plastic means that creep is more important relative tofatigue.

The question contains 6 statements related to the "Introduction to Fracture Mechanics" where we need…

O Gc and K1c have different units and are related to each other by the tensile modulus. The relative values of K1c and yield strength determine whether a plastic fails in a brittle manner. The stress concentration caused by a circular hole in a much larger plate is constant regardless of the hole size. O Laminating rubber with thin steel sheets is a good way to increase the shear modulus parallel to the sheets. O For rubbers, the entropy increases with tension and decreases with compression. A lower R value in a fatigue test of a plastic means that creep is more important relative to fatigue.

O Gc and K1c have different units and are related to each other by the tensile modulus. The relative values of K1c and yield strength determine whether a plastic fails in a brittle manner. The stress concentration caused by a circular hole in a much larger plate is constant regardless of the hole size. O Laminating rubber with thin steel sheets is a good way to increase the shear modulus parallel to the sheets. O For rubbers, the entropy increases with tension and decreases with compression. A lower R value in a fatigue test of a plastic means that creep is more important relative to fatigue.