Hitachi, Ltd.

Katsutoshi Sato

Hiroshi Kitaguchi

Hiroshi Miyai

Shigeru Izumi

Yasuko Aoki

Yukiya Hattori

Seishi Watahiki

Masahiro Kondo

Akira Osaka

Susumu Itoh

Shoji Kamata

Tadashi Kanaya

Susumu Ito

Hiroaki Onishi

Tsuneo Ichiishi

Masaru Aoshima

A non-destructive inspection apparatus has a radiation source, a radiation detector, a radiation source diver, a detector driver, a drive controller, a delay circuit, a radiation signal processing circuit, a memory, a computer, a display device, and an input device. The radiation detector consists of one-dimensional or two-dimensional array of detectors having a long collimator whose pores are in parallel with the radiation angle of the radiation emitted in an angular pattern from the radiation source, whereby a transmission image of a large size structure can be obtained at high speed and with a high resolution. Furthermore, the detect position in an inspection object can be specified by analyzing a plurality of specified transmission images using the inspection apparatus.

Non-destructive inspection apparatus and inspection system using it

An imaging method of an X-ray computerized tomography (X-ray CT) comprising the steps of reconstructing a partial region including a region of interest from penetrating data of an object, extracting only shape information from the reconstructed image, setting a threshold function determined by resolution to the reconstructed image information which is equivalent to linear absorption coefficient distribution (density), extracting the reconstructed image information by making the information into bi-values or tri-values based on the threshold function or by differentiating the information, and extracting and imaging only a portion where the linear absorption coefficient distribution (density) changes stepwise.

Imaging method of X-ray computerized tomography and apparatus for X-ray

A steel pipe transporting apparatus and a method for controlling the same wherein the apparatus includes a plurality of said rails slantingly arranged from a feed-in end to a feed-out end so as to enable transportation of the steel pipe by causing the steel pipe to roll down on the skid rails from the feed-in end to the feed-out end. A plurality of electromagnets are arranged along the skid rails from the feed-in end to the feed-out end and each of the electromagnets include an inner pole with an exciting coil wound thereon and a pair of outer poles. The pair of outer poles have an upper end connected with a skid rail and a lower end connected with a common base, the inner poles having a lower end connected to the common base and an upper end arranged so as to face the steel pipe when transported on the skid rails so that the upper end portions of the inner poles are magnetically separated from each other. The electromagnets are divided into a plurality of groups and an exciting current is applied to the electromagnets group by group in order so as to cause the steel pipe to roll down along the skid rails.

Apparatus for transporting materials to be transferred and method of

A transporting apparatus for transporting cylindrical steel articles such as steel pipes by using inclined skid rails is arranged to have a magnetic braking device including electromagnetic coils for controlling the rolling speeds of the articles to be transported, wherein the electromagnetic coils are so disposed as to minimize a magnetic path for the magnetic fluxes developed by the electromagnetic coils and are also arranged in the shell type manner to prevent the electromagnetic coils from being externally damaged.

Apparatus for transporting cylindrical steel articles

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Hitachi, Japan

Katsutoshi Sato