Ultrasonic test system, ultrasonic test method and method of manufacturing aircraft part

An ultrasonic test system comprising:

• at least one ultrasonic transducer that transmits a first ultrasonic wave and a second ultrasonic wave toward a test region, the first ultrasonic wave having a relatively low frequency, the second ultrasonic wave having a frequency higher than the frequency of the first ultrasonic wave;
• at least one sensor that detects a reflected wave of the first ultrasonic wave and the second ultrasonic wave which has passed through the test region, the reflected wave being from the test region;
• and
• damage detection circuitry configured to detect a damage in the test region, based on the reflected wave of the first ultrasonic wave and the second ultrasonic wave which has passed through the test region;
• and where the at least one ultrasonic transducer comprises:
• a first ultrasonic transducer that transmits the first ultrasonic wave toward the test region;
• and
• a second ultrasonic transducer that transmits the second ultrasonic wave toward the test region from a direction different from a direction of the first ultrasonic wave;
• and wherein the at least one sensor comprises:
• at least one optical fiber sensor that detects the reflected wave of the first ultrasonic wave and the second ultrasonic wave which has passed through the test region.

An ultrasonic test system comprising:

• an ultrasonic transducer that transmits a first ultrasonic wave and a second ultrasonic wave toward a test region, the first ultrasonic wave having a relatively low frequency, the second ultrasonic wave having a frequency higher than the frequency of the first ultrasonic wave;
• at least one sensor that detects a reflected wave of the first ultrasonic wave and the second ultrasonic wave which has passed through the test region, the reflected wave being from the test region;
• and
• damage detection circuitry configured to detect a damage in the test region, based on the reflected wave of the first ultrasonic wave and the second ultrasonic wave which has passed through the test region, and
• wherein the at least one sensor comprises a first sensor and a second sensor, and wherein the first ultrasonic wave and the second ultrasonic wave sent by the ultrasonic transducer is sensed, respectively, by the first sensor and the second sensor.

An ultrasonic test system comprising:

• at least one ultrasonic transducer that transmits a first ultrasonic wave and a second ultrasonic wave toward a test region, the first ultrasonic wave having a relatively low frequency, the second ultrasonic wave having a frequency higher than the frequency of the first ultrasonic wave;
• at least one sensor that detects a reflected wave of the first ultrasonic wave and the second ultrasonic wave which has passed through the test region, the reflected wave being from the test region;
• and
• damage detection circuitry configured to detect a damage in the test region, based on the reflected wave of the first ultrasonic wave and the second ultrasonic wave which has passed through the test region, and
• wherein one of the at least one ultrasonic transducer transmits the first ultrasonic wave and the second ultrasonic wave to respective first and second sensors.