Other

Alcan International Limited

Bl Technology Limited

Anthony N Maddison

Peter G Sheasby

Patrick G Selwood

A stress testing apparatus includes a cylinder block with twelve cylinders each housing a piston Hydraulic pressure is provided to each of the cylinders by a common supply bore for urging each piston out of its respective cylinder A stress testing device is mounted over each cylinder and piston For tensile testing (see FIG. ) of a specimen (X), a piston ( ) acts on the housing ( ) of the device ( ) through pins ( ), to push the housing ( ) away from the cylinder block The specimen X is mounted between the housing ( ) and the cylinder block For compressive testing (see FIG. ), of a specimen Y the housing ( ) is rigidly secured to the cylinder block and the cylinder ( ) acts to compress the specimen Y between the housing ( ) and the cylinder block through a shaft ( ).

Stress testing apparatus

Stressing device

A process for forming a structure of aluminium components comprises pre-treating aluminium sheet to produce an inorganic non-metallic surface coating thereon, forming the pre-treated sheet to produce components of desired shape and applying adhesive to the components and securing them together by means of the adhesive. Generally, an adhesive-compatible press lubricant is present on the sheet when it is formed. The invention also includes aluminium sheet carrying the inorganic non-metallic surface coating and a press lubricant thereon.

Structures fabricated from aluminium components and processes involved

Structures fabricated from aluminum components and processes involved in

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Tamworth, United Kingdom

Anthony N Maddison