Maximum value storage sensor

A maximum value storage sensor for detecting maximum strains in a component member of structures, comprising:

• a conductive body having;
• a plurality of filamentary conductive elements arrayed in parallel with each having a given electrical resistance, and with each folded part of the conductive elements at the middle part arranged transversally in one line, and
• a circuit which gives a correlative resistance change corresponding to the sequential cutoff of the conductive elements;
• a cutting means for cutting off the conductive elements located on the the folded part of the conductive body;
• a slider for moving the cutting means relative to the conductive body;
• and
• a protective case for housing the conductive body, the cutting means, and the slider with watertightness,
• wherein the protective case is attached to an object component member in a structure so as to induce a relative movement against the conductive body in the slider corresponding to a strain exerted on the component member, the cutting means sequentially cuts off the conductive elements inside the conductive body corresponding to an amount of the relative movement, and the resistance of the conductive body in the cutoff state gives a maximum strain in the component member of the structure.