Vehicle body structure quality evaluation device and vehicle body structure quality evaluation method

A bumper quality evaluation device that evaluates a quality of a bumper in a vehicle including a detector that detects a target by irradiating an outside of a vehicle body with an electromagnetic wave along an optical axis and receiving a reflected wave of the electromagnetic wave from the target and the bumper that is provided on the vehicle body to shield the detector from the target, the bumper quality evaluation device comprising:

• an intensity parameter measurer that measures an intensity parameter value of the reflected wave passing through the bumper and received from the target by the detector;
• an angle information acquirer that acquires angle information on an angle of a direction of arrival of the reflected wave from the target with respect to the optical axis;
• and
• a quality evaluator that compensates the intensity parameter value based on the angle information to calculate a compensation value, evaluates that the bumper is normal when a difference value between the compensation value and a predetermined reference value is less than a predetermined threshold, and evaluates that the bumper is abnormal when the difference value is equal to or more than the threshold.