Kabushiki Kaisha Toshiba

Chugai Boyeki Co., Ltd.

Keisuke Ueno

Takashi Usui

Kazuo Watabe

Hidefumi Takamine

Yuki Ueda

Tetsuya Kugimiya

Yongfang Li

Yousuke Hisakuni

Junko Hirokawa

Shuji Masuda

Souichi Hanafusa

Tatsuhiko Sakaguchi

Mamoru Shibuya

According to one embodiment, a corrosion determination system according to an embodiment includes one or more sensors, an index data acquirer, and a corrosion determiner. Elastic waves generated from a structure including at least a member that generates elastic waves due to corrosion are detected. The index data acquirer acquires index data that is an index of an amount of water on the surface of the structure. The corrosion determiner determines whether there is corrosion in the structure based on elastic waves generated due to corrosion identified based on the index data among a plurality of elastic waves detected by the one or more sensors.

Corrosion determination system, corrosion determination apparatus and corrosion determination method

A sensor module according to an embodiment includes a sensor; a sensor holder that holds the sensor and includes a pressing force application portion to apply a pressing force to press the sensor toward a measurement target object side; an adhesion portion that adheres the sensor holder to the measurement target object by an adhesion force; and a change mechanism that changes a relative magnitude relationship between the pressing force and the adhesion force.

Sensor module, sensor module installation device, and mounting method of sensor module

An ultrasonic welding diagnostic method includes: applying a pressing force to an object to be joined so as to generate a surface pressure on a joint surface of the object to be joined; inputting ultrasonic waves to the joint surface; detecting an elastic wave propagating through the object to be joined by at least one sensor at a plurality of different positions; analyzing a signal detected by the sensor to generate an envelope of the signal and calculating information about the envelope; and determining a joint state on the joint surface based on the calculation result of the information.

Ultrasonic welding diagnostic method, joining method of welding member, and inspection device

An adhesion/peeling method according to an embodiment includes adhering a first surface side of an electrically peelable adhesive sheet to a predetermined position of a fixation target object, wherein the electrically peelable adhesive sheet is formed of an electro-peeling adhesive having adhesiveness on the first surface side and a second surface side thereof, and the adhesiveness of the electro-peeling adhesive is lowered due to an input of a voltage; adhering a first electrode of an adherend including the first electrode formed of a conductor to the second surface side of the electrically peelable adhesive sheet; containing a liquid at the predetermined position of the fixation target object to temporarily form a second electrode with conductivity on a surface of the fixation target object; and inputting a predetermined voltage between the first electrode and the second electrode to peel of the electrically peelable adhesive sheet from the fixation target object.

Adhesion/peeling method, and adhesion/peeling device

According to one embodiment, a structure evaluation system includes at least three or more sensors, a position locator, and an evaluator. The three or more sensors are arranged on surfaces different from a surface to which an impact is applied with respect to a structure at different intervals in a first direction of the structure and a second direction orthogonal to the first direction and detects elastic waves generated from the structure. The position locator locates a position of a source in which the elastic waves are generated on the basis of the elastic waves detected by each of the three or more sensors. The evaluator evaluates a deterioration state of the structure on the basis of information based on a position location process of the position locator and information indicating a position where the impact is applied.

Structure evaluation system, structure evaluation apparatus, and structure evaluation method

According to one embodiment, a structure evaluation system includes an impact imparting unit, a plurality of sensors, a position locator, and an evaluator. The impact imparting unit applies impacts to a second region different from a first region of a structure to which traveling sections of a vehicle, which travels on the structure, apply impacts. The plurality of sensors detect elastic waves generated in the structure. The position locator locates a position of a source of the elastic waves on the basis of the elastic waves detected by each of the plurality of sensors. The evaluator evaluates a deterioration state of the structure on the basis of a position location result of the position locator.

Structure evaluation system and structure evaluation method

According to one embodiment, a structure evaluation system includes a wave guide, a first sensor, a second sensor, and a calculation part. The wave guide is formed in a rod shape, is inserted into a hole that is formed at a predetermined depth from a surface of a measurement target, and has one end fixed to a deepest portion of the hole. The first sensor is provided at the other end of the wave guide at a position that is substantially the same as the surface. The second sensor is provided on the surface of the measurement target. The calculation part estimates a depth of damage occurring in the measurement target from the surface on the basis of a first detection value of an elastic wave transmitted to the measurement target which is detected by the first sensor through the wave guide and a second detection value obtained by an elastic wave which is detected by the second sensor.

Structure evaluation method and structure evaluation system

Flame retardant heat insulating material and a method for preparing the same characterized in that a ground mixture of cellulose fibers with cellulose flakes or particles is chemically or physically bonded with condensed ammonium phosphate to form a fiberfil.

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Kawasaki, Japan

Keisuke Ueno