Kabushiki Kaisha Toyota Chuo Kenkyusho

Ube Industries, Inc.

Hajime Ikuno

Takemi Yamamura

Hiroshi Kawahara

Hiroshi Hohjo

Yoshihiko Sugimoto

Masaki Shibuya

Toshihiro Ishikawa

Hiroaki Iwahori

Shinichi Towata

Senichi Yamada

Isamu Ueda

Masanao Hori

Shoji Hotta

Akira Yamada

A thermal fatigue testing device that includes a gas cooling component, a tube member, and a heat generating body is provided. The gas cooling component cools a blown gas to a predetermined temperature or less, and that is provided with a heat insulating member at an outer side surface thereof. The tube member has a gas flow path formed therein from a first end to a second end, is provided at an outer side surface thereof with a heat radiating portion from the second end to a first intermediate portion, and is connected with the gas cooling component at the first end side. A test body is arranged at the second end side. The heat generating body is provided in the gas flow path between the first end and a second intermediate portion and heats a gas flowing through the gas flow path.

Thermal fatigue testing device and recording medium recorded with a program

A multiple testing system has plural testing units which are disposed independently, and a single information processing device. The testing unit has a frame, a loading mechanism supported at the frame and applying a desired load quantity on a test body, and a detector detecting a load quantity applied on the test body. By multitasking control and with respect to the testing units, the information processing device carries out: feedback control processing for, on the basis of a detected load quantity, controlling the loading mechanism such that the detected load quantity becomes a predetermined target value; control processing at an abnormal situation when at least one of an abnormality of the test body, an abnormality of the testing unit, or an abnormality of a power source of the loading mechanism, is detected; and interface processing with an operator.

Multiple testing system and testing method

Aluminum alloys and castings are provided that have excellent practical fatigue resistances. The alloy includes, based upon 100 mass %, 4-12 mass % of Si, less than 0.2 mass % of Cu, 0.1-0.5 mass % of Mg, 0.2-3.0 mass % of Ni, 0.1-0.7 mass % of Fe, 0.15-0.3 mass % of Ti, and the balance of aluminum (Al) and impurities. The alloy has a metallographic structure, which includes a matrix phase primarily of &#x3b1;-Al and a skeleton phase crystallizing around the matrix phase in a network shape. The matrix phase is strengthened by precipitates containing Mg. Because of the strengthened matrix phase, and the skeleton phase that surrounds it, the castings have high strength, high fatigue strength, and high thermo-mechanical fatigue resistance.

Aluminum alloys for casting and aluminum alloy castings

A piston made of aluminum cast alloy having a main body section in an approximately cylindrical shape, atop face section provided and arranged so as to occlude one end of the main body section, and a pin boss section in which a pin hole is provided so as to penetrate through the main body section in a radial direction. The piston comprises an aluminum cast alloy containing Mg (Magnesium): equal to or less than 0.2 mass %, Ti (Titanium) 0.05-0.3 mass %, Si (Silicon): 10-21 mass %, Cu (Copper): 2-3.5 mass %, Fe (Iron): 0.1-0.7 mass %, Ni (Nickel): 1-3 mass %, P (Phosphorus): 0.001-0.02 mass %, Al (Aluminum): the remaining portions, and impurities.

Piston made of aluminum cast alloy and method of manufacturing the same

An apparatus and method for testing thermal fatigue resistance. The apparatus utilizes a unified heating device and cooling device so that the apparatus is smaller and simpler and a more even temperature distribution can be obtained. The apparatus has at least one gas duct facing the test unit and a device for supplying the duct with a compressed gas flow. A plurality of gas ducts may be used which face plural points on the test unit from plural directions. Thermocouples are placed on several points on the test unit and the temperatures of the points measured. Swift and precise testing of thermal fatigue resistance can be performed by a feedback control of each heating device based on the measured temperature. Thermal strains are caused in certain parts of the test unit due to differences of thermal expansion between members of the test unit.

Apparatus and method for testing thermal fatigue resistance

A fiber and fibrous material for producing composite materials, fiber-reinforced metals, fiber-reinforced plastics and fiber-reinforced ceramics, in which short fibers, whiskers or powders made of heat resistant material are deposited on continuous fibers made of heat resistant material. The composite materials, such as fiber-reinforced metals, plastics, and ceramics, contain the fibrous material in a matrix, and have improved control of the fiber volume ratio and mechanical characteristics. Processes for producing the fiber, fibrous materials and composite materials are also disclosed.

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Seto, Japan

Hajime Ikuno