However the value of the factor K(subscript ISCC) was acquired by experimental tests, so it was inconvenient and has not been widely used in engineering practice.

• 在实际工程中，由于临界应力强度因子门槛值K(下标ISCC)均通过实验方法来获取，给评定过程带来了一定困难且不便于推广应用。