Abstract: A nondestructive inspection apparatus includes a pair of guided wave sensors disposed on an outer surface of a piping and a guided wave inspection device connected to the pair of guided wave sensors which, outputs a transmitting signal for propagating a guided wave to the guided wave sensors, and obtains a receiving signal by receiving a propagated signal by the guided wave sensors. An inspection-result storage device stores the guided wave as a digitized signal of the received wave and an inspection-result diagnostic device performs arithmetic processing of judging whether or not a signal associated with a defect exists.

Abstract: The position detection system includes a pressure sensor that detects the vertical position of an underwater vehicle, a range sensor unit that detects the relative distances of the underwater vehicle from its surrounding structures; a measurement image acquisition unit that acquires a measurement image of the horizontal plane, an image storage unit that stores images, an image selector that selects one of the stored images that corresponds to the horizontal plane in which the relative distances have been detected, a corresponding-area identification unit that identifies the area in the selected image that corresponds to the measurement image by performing map matching, and a horizontal position calculator that identifies, the pixel that corresponds to the position at which the relative distances have been detected and calculates the horizontal position of the underwater vehicle.

Abstract: Disclosed herein are an apparatus and a technique for quickly detecting a defective portion including wastage, which has occurred in piping having a straight piping portion or a bending zone, in the nondestructive inspection using a guided wave. A guided wave sensor 3 included in a guided wave inspection device 4 is mounted to the outer surface of piping 1. A guided wave is propagated to an inspection area of the piping 1. If a defective portion exists, the guided wave sensor 3 receives the guided wave that has been reflected from the defective portion. As a result, the guided wave inspection device 4 can acquire receive information including receive information derived from the defect.

Abstract: A nondestructive inspection apparatus includes a pair of guided wave sensors disposed on an outer surface of a piping and a guided wave inspection device connected to the pair of guided wave sensors which, outputs a transmitting signal for propagating a guided wave to the guided wave sensors, and obtains a receiving signal by receiving a propagated signal by the guided wave sensors. An inspection-result storage device stores the guided wave as a digitized signal of the received wave and an inspection-result diagnostic device performs arithmetic processing of judging whether or not a signal associated with a defect exists.

Abstract: An eddy current testing method for a turbine rotor including a disc, a plurality of turbine blades disposed along the periphery of the disc, and a plurality of pins for joining a blade fork portion formed on each of the plurality of turbine blades to a disc fork portion formed on the disc, the method including inserting a probe having an eddy current testing sensor into a hole formed through the disc fork portion and the blade fork portion by pulling out one of the plurality of pins in a state that the blade fork portion is still inserted into the disc fork portion; and performing eddy current testing for at least part of an internal surface of the hole by using the probe.

Abstract: An ultrasonic testing apparatus for a turbine fork of a turbine blade joined to a turbine disc, comprising: an ultrasonic testing sensor; a sensor mounting apparatus for mounting the ultrasonic testing sensor on a flat portion on a side surface of the turbine fork with the turbine blade joined to the turbine disc; and an ultrasonic testing apparatus for inspecting internal and external surfaces of the turbine fork by using reflected waves, which is received by the ultrasonic testing sensor, from the internal surface of the turbine fork.

Abstract: An object of the invention is to provide a system for detecting the position of an underwater vehicle that enables an improvement in the accuracy of detecting the position of the underwater vehicle.

Abstract: The eddy current testing apparatus includes a probe having an eddy current testing sensor including a pair of eddy current testing coils. The apparatus also includes an eddy current testing flaw detector inputting detection signals from the eddy current testing sensor. The diameter of a magnetic core used in each of the pair of eddy current testing coils is within the range of 0.1 mm to 0.5 mm.

Abstract: The eddy current testing apparatus includes a probe having an eddy current testing sensor including a pair of eddy current testing coils. The apparatus also includes an eddy current testing flaw detector inputting detection signals from the eddy current testing sensor. The diameter of a magnetic core used in each of the pair of eddy current testing coils is within the range of 0.1 mm to 0.5 mm.

Abstract: The eddy current testing apparatus includes a probe having an eddy current testing sensor including a pair of eddy current testing coils. The apparatus also includes an eddy current testing flaw detector inputting detection signals from the eddy current testing sensor. The diameter of a magnetic core used in each of the pair of eddy current testing coils is within the range of 0.1 mm to 0.5 mm.

Abstract: An ultrasonic testing apparatus for a turbine fork of a turbine blade joined to a turbine disc, comprising: an ultrasonic testing sensor; a sensor mounting apparatus for mounting the ultrasonic testing sensor on a flat portion on a side surface of the turbine fork with the turbine blade joined to the turbine disc; and an ultrasonic testing apparatus for inspecting internal and external surfaces of the turbine fork by using reflected waves, which is received by the ultrasonic testing sensor, from the internal surface of the turbine fork.

Abstract: Disclosed herein are an apparatus and a technique for quickly detecting a defective portion including wastage, which has occurred in piping having a straight piping portion or a bending zone, in the nondestructive inspection using a guided wave. A guided wave sensor 3 included in a guided wave inspection device 4 is mounted to the outer surface of piping 1. A guided wave is propagated to an inspection area of the piping 1. If a defective portion exists, the guided wave sensor 3 receives the guided wave that has been reflected from the defective portion. As a result, the guided wave inspection device 4 can acquire receive information including receive information derived from the defect.

Abstract: The eddy current testing apparatus includes a probe having an eddy current testing sensor including a pair of eddy current testing coils. The apparatus also includes an eddy current testing flaw detector inputting detection signals from the eddy current testing sensor. The diameter of a magnetic core used in each of the pair of eddy current testing coils is within the range of 0.1 mm to 0.5 mm.