Mtu Motoren-und Turbinen-union Munchen Gmbh

Motoren- Und Turbinen-union Munchen Gmbh

Wolf-Dieter Feist

Herbert Zech

Manfred Podlech

Johann Gollwitzer

Test piece for ultrasonic testing

A structural component is made by providing a main body and applying fibre material to the body so as to adjust the coefficient of thermal expansion and/or the modulus of elasticity of the main body. If the main body is made by molding, the fibre material may be embedded in the main body while the molding material is still soft. The fibre material may be loose long fibres adhesively secured to the main body. The fibre material may be a layer having a fibre orientation arranged in the direction in which stress is experienced by the structural component and/or the direction in which expansion of the structural component is to be resisted. Several layers of fibre material may be applied to the main body with the fibre orientation of different layers being in different directions.

Method of manufacturing structural components

A process for determining the interactions between a solution and a body immersed in the solution, comprising the steps of measuring the sound emission from the body, such as sound waves in the ultrasonic range, while the solution and body are interacting and using this measurement to determine the interaction. The process can be used, inter alia, during the chemical removal of material from a body by a solution, such as chemical etching, to determine the degree of exhaustion of the solution. Moreover, the sound emission can be used in the control of further interaction between the solution and body.

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Karlsfeld, Germany

Wolf-Dieter Feist