METHOD FOR TESTING CONNECTIONS OF METAL WORKPIECES TO PLASTIC COMPOUNDS FOR CAVITIES BY MEANS OF ULTRASOUND

METHOD FOR TESTING CONNECTIONS OF METAL WORKPIECES TO PLASTIC COMPOUNDS FOR CAVITIES BY MEANS OF ULTRASOUND

The invention relates to a method for testing connections of metal workpieces to plastic compounds for cavities by means of ultrasound, wherein the plastic compound is arranged between the workpiece as an intermediate layer or is connected to the workpiece on one side and the cavity is located withi...

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Hauptverfasser: KREMER CHRISTIAN, WINKELS JOERN, KAACK MICHAEL, BRAUER HOLGER
Format: Patent
Sprache:eng
Schlagworte:
INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES
MEASURING
PHYSICS
TESTING
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creator KREMER CHRISTIAN
WINKELS JOERN
KAACK MICHAEL
BRAUER HOLGER
description The invention relates to a method for testing connections of metal workpieces to plastic compounds for cavities by means of ultrasound, wherein the plastic compound is arranged between the workpiece as an intermediate layer or is connected to the workpiece on one side and the cavity is located within the plastic compound, wherein the cavity is connected to the workpiece by means of a remaining plastic layer or plastic skin and wherein the plastic compound is exposed to ultrasonic signals of a certain test frequency and pulse length from the metal side of the workpiece by means of at least one ultrasonic probe, and in particular the ultrasonic signals reflected by flaws in the plastic compound are detected by the same or another ultrasonic probe and converted into electrical signals that can be evaluated and subjected to a threshold observation. The test frequency of the ultrasonic signals is set in a range of 1 to 10 MHz so that the attenuation of the sound is minimal after passing through the plastic skin.
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subjects INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES
MEASURING
PHYSICS
TESTING
title METHOD FOR TESTING CONNECTIONS OF METAL WORKPIECES TO PLASTIC COMPOUNDS FOR CAVITIES BY MEANS OF ULTRASOUND
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