A method of generating a topology for a material includes parametrizing one or more material properties of the material using virtual testing and generating a topology for the material based on the parametrizing. Pattern match filtering is used to reduce false alarm rate, increase sensitivity and improve leak location accuracy, while quickly detecting leaks by the acoustic signal generated from a leak event in pipelines containing gas or liquid under pressure. The first and second groups of bump electrodes are arrayed in a grid with intervals Sx1 in the X direction and Sy1 in the Y direction. Further, the porous nature of the wire is expected to improve flushability during the electrical discharge machining, providing spaces to eliminate particles of the machining. The unlocked position corresponds to the first position of the activation member and the locked position corresponds to the second position of the activation member.