A system for nondestructive testing of a composite includes a emitter that transmits a plurality of sound signals to a composite at over a range of frequencies and receives sound signals from the composite, and generates electric signals in response to the received signals; a computer control for receiving the electric signals from the emitter, wherein the computer control programmed to apply a different, preset gain setting to at least one of the plurality of frequencies for a selected display image such that the display image shows a plot of received signal amplitude for the plurality of frequencies that is at least partially flattened, so that the amplitude of the signal from material without defects is the same at all frequencies, and changes in the amplitude of the signal are visually perceptible on the display for all of the plurality of signals.

According to one embodiment, a control method includes setting a transmission angle of an ultrasonic wave to a standard angle. The control method further includes transmitting an ultrasonic wave at the set transmission angle and detecting an intensity of a reflected wave from an object. The control method further includes calculating a tilt angle based on a gradient of the intensity. The tilt angle indicates a tilt of the object. The control method further includes resetting the transmission angle based on the tilt angle.

Systems and methods for improved ultrasonic testing are provided. An ultrasonic testing system can include an ultrasonic probe and an ultrasonic controller in electrical communication with the ultrasonic probe. The ultrasonic probe can include a plurality of ultrasonic transducers. The ultrasonic controller can be configured to generate one or more driving signals operative to cause the plurality of ultrasonic transducers to generate respective ultrasonic waves. A combination of the ultrasonic waves can form an ultrasonic waveform having one or more characteristics specified by the one or more driving signals. The ultrasonic controller can be further configured to change the one or more driving signals to adjust at least one characteristic of the ultrasonic waveform.

Systems and methods for improved ultrasonic testing are provided. An ultrasonic testing system can include an ultrasonic probe and an ultrasonic controller in electrical communication with the ultrasonic probe. The ultrasonic probe can include a plurality of ultrasonic transducers. The ultrasonic controller can be configured to generate one or more driving signals operative to cause the plurality of ultrasonic transducers to generate respective ultrasonic waves. A combination of the ultrasonic waves can form an ultrasonic waveform having one or more characteristics specified by the one or more driving signals. The ultrasonic controller can be further configured to change the one or more driving signals to adjust at least one characteristic of the ultrasonic waveform.

A strength inspection device for evaluating a tensile strength of a test body as a fiber reinforced composite material includes: an AE sensor that detects AE waves generated in the test body by a tensile load in a test period of application of the increasing tensile load to the test body, and generates waveform data of the AE waves; a target wave specifying unit that specifies, as target waves, the AE waves of duration longer than a time threshold, based on the waveform data; an arithmetic unit calculates a frequency center of gravity concerning each target wave; and an evaluation data generation unit generates strength evaluation data of association between the frequency center of gravity concerning each target waves and magnitude of the tensile load applied to the test body at a detection time point of the target wave.

Systems and methods for improved ultrasonic testing are provided. An ultrasonic testing system can include an ultrasonic probe and an ultrasonic controller in electrical communication with the ultrasonic probe. The ultrasonic probe can include a plurality of ultrasonic transducers. The ultrasonic controller can be configured to generate one or more driving signals operative to cause the plurality of ultrasonic transducers to generate respective ultrasonic waves. A combination of the ultrasonic waves can form an ultrasonic waveform having one or more characteristics specified by the one or more driving signals. The ultrasonic controller can be further configured to change the one or more driving signals to adjust at least one characteristic of the ultrasonic waveform.

Systems and methods for improved ultrasonic testing are provided. An ultrasonic testing system can include an ultrasonic probe and an ultrasonic controller in electrical communication with the ultrasonic probe. The ultrasonic probe can include a plurality of ultrasonic transducers. The ultrasonic controller can be configured to generate one or more driving signals operative to cause the plurality of ultrasonic transducers to generate respective ultrasonic waves. A combination of the ultrasonic waves can form an ultrasonic waveform having one or more characteristics specified by the one or more driving signals. The ultrasonic controller can be further configured to change the one or more driving signals to adjust at least one characteristic of the ultrasonic waveform.

According to one embodiment, a control method includes setting a transmission angle of an ultrasonic wave to a standard angle. The control method further includes transmitting an ultrasonic wave at the set transmission angle and detecting an intensity of a reflected wave from an object. The control method further includes calculating a tilt angle based on a gradient of the intensity. The tilt angle indicates a tilt of the object. The control method further includes resetting the transmission angle based on the tilt angle.

In example embodiments, an apparatus includes a microphone, an emitter follower stage having an input coupled to the microphone, and an amplifier stage coupled to an output of the emitter follower stage. The amplifier stage is powered by a positive voltage regulator and a negative voltage regulator. In some embodiments, the microphone and the emitter follower stage are both referenced to a ground connection and are both biased by the positive voltage regulator. The output of the emitter follower stage may have an impedance that is an order of magnitude less than an impedance of the microphone. In some embodiments, the apparatus may be used to detect ultrasonic signals, such as those emitted by animals such as bats, rodents, and pest insects.

In example embodiments, an apparatus includes a microphone, an emitter follower stage having an input coupled to the microphone, and an amplifier stage coupled to an output of the emitter follower stage. The amplifier stage is powered by a positive voltage regulator and a negative voltage regulator. In some embodiments, the microphone and the emitter follower stage are both referenced to a ground connection and are both biased by the positive voltage regulator. The output of the emitter follower stage may have an impedance that is an order of magnitude less than an impedance of the microphone. In some embodiments, the apparatus may be used to detect ultrasonic signals, such as those emitted by animals such as bats, rodents, and pest insects.