Roller bearings support heavy loads by riding on an ultra-thin oil film (between the roller and the raceway), the thickness of which is critical as it reflects the lubrication performance. Ultrasonic interfacial reflection, which facilitates a non-destructive measurement of oil film thickness, has been widely studied. However, insufficient spatial ...
Cornflakes owe much of their success to the crispness of their texture. This attribute is generally considered as a pleasant sensation and appears as a good predictor of the acceptability of the texture for many brittle cereal products. Sensory perception of crispness in food has been shown to involve acoustic characteristics. The aim of this work ...
Motivation for the study of the assessment of wood quality of standing trees with ultrasonic technique is both practical and theoretical. Forest managers would like to understand better how the sylvicultural practice act on wood quality. Three physiologists have known for over a century that wood quality is determined by the life conditions of stan...
Germany
Available from TIB Hannover: RO 3132(70) / FIZ - Fachinformationszzentrum Karlsruhe / TIB - Technische Informationsbibliothek / SIGLE / DE / Germany
Germany
A new reliable and robust method for quality assurance and process monitoring in assembly processes has been developed which is based on the measuring and analysis of noises originating in force- and form-precise assembly processes. The report describes the acoustic monitoring system with the sensorics and the methods of signal classification. From...
The development of detection techniques on the basis of vibrations and the phenomena of propagation of mechanical waves are described. Exciting vibrations in the low frequency range (100-10.000 Hz) are hammer impacts comparable to the well-known knocking sound test of ceramics. The new techniques are capable of detecting cracks as well as the condi...
Germany
SIGLE / Available from TIB Hannover: F97B693+a / FIZ - Fachinformationszzentrum Karlsruhe / TIB - Technische Informationsbibliothek / Bundesministerium fuer Bildung, Wissenschaft, Forschung und Technologie, Bonn (Germany) / DE / Germany
