Detection device, detection system, propagation member, fixture, and storage medium

A detection system comprising:

• a detection device including
• a detector including a plurality of detection elements configured to transmit an ultrasonic wave toward an object and detect a reflected wave,
• a first propagation member attached to the detector and configured to propagate the ultrasonic wave,
• a second propagation member attached to the first propagation member, the second propagation member being configured to propagate the ultrasonic wave and being softer than the first propagation member,
• a fixture configured to detachably fix the second propagation member to the first propagation member;
• and
• a replacement device configured to replace the second propagation member,
• wherein a portion of the second propagation member protrudes beyond the fixture toward a first direction from the first propagation member toward the second propagation member,
• the fixture includes a first contact surface configured to contact the object,
• the first propagation member includes a second contact surface configured to contact the second propagation member when the second propagation member is fixed by the fixture, and
• when the portion of the second propagation member contacts the object, the portion of the second propagation member deforms along a surface shape of the object such that a thickness of the portion in the first direction is reduced, thereby causing the first contact surface to contact a surface of the object in a state in which the first contact surface is substantially parallel to the second contact surface.

A detection device comprising:

• a detector including a plurality of detection elements configured to transmit an ultrasonic wave toward an object and detect a reflected wave;
• a first propagation member attached to the detector and configured to propagate the ultrasonic wave;
• a second propagation member configured to propagate the ultrasonic wave and being softer than the first propagation member, the second propagation member having a hardness measured by an ASKER Durometer Type F that is greater than 40 and less than 60;
• and
• a fixture configured to detachably fix the second propagation member to the first propagation member,
• wherein a portion of the second propagation member protrudes beyond the fixture toward a first direction from the first propagation member toward the second propagation member,
• the fixture includes a first contact surface configured to contact the object, and
• when the portion of the second propagation member contacts the object, the portion of the second propagation member deforms along a surface shape of the object such that a thickness of the portion in the first direction is reduced, thereby causing the first contact surface to contact a surface of the object.

A detection system comprising:

• a detection device including
• a detector including a plurality of detection elements configured to transmit an ultrasonic wave and detect a reflected wave,
• a first propagation member attached to the detector and configured to propagate the ultrasonic wave, and
• a fixture configured to detachably fix a second propagation member to the first propagation member, the second propagation member being configured to propagate the ultrasonic wave and being softer than the first propagation member;
• a processing device configured to determine whether the second propagation member is abnormal based on intensity data indicating an intensity of the reflected wave detected by the plurality of detection elements;
• a release unit configured to release the fixation of the second propagation member by the fixture;
• an extrusion unit configured to extrude the second propagation member placed on the fixture;
• and
• a transport unit configured to transport the second propagation member.