Ultrasonic Soldering of Aluminium

Asthma due to aluminium soldering flux.

copper as a material for electric cables. A previous survey of respiratory complaints after the use of this particular flux had failed to show any objective change in lung function, and the present cases are the first to be reported. Both subjects have been investigated by means of serial spirometry, peak flow rates, and body plethysmography following inhalation of small amounts of flux fumes; ...

Ultrasonic Attenuation in Polycrystalline 5n Aluminium

Ultrasonic Inspection of Gas Porosity Defects in Aluminium Die Castings

1 TABLE OF CONTENTS iii

Ultrasonic inspection of rough surface aluminium die castings

The condition of the surface through which a sound beam enters a material is an important factor in ultrasonic non-destructive testing(1). Detection of discontinuities such as cracks, voids and porosities in castings is greatly affected by the extent of roughness. Increased roughness reduces the transmitted energy of the sound beam and this, in turn, reduces the amplitude of the received signal...

Ultrasonic Inspection of Sub-Surface Defects In Aluminium Die- Castings

Non-destructive testing using ultrasonic measurement is used to ensure the quality of the die-casting products. The quality of a casting depends on the presence of discontinuities such as porosity and on the final metallurgical structure. Discontinuities occurring in the sub-surface of the cast structure mostly have irregular surfaces which scatter the ultrasound waves and make ultrasonic testi...