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Mechanics and mechanisms of ultrason...

de Vries, Edgar.

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Mechanics and mechanisms of ultrasonic metal welding.

Record Type:	Electronic resources : Monograph/item
Title/Author:	Mechanics and mechanisms of ultrasonic metal welding./
Author:	de Vries, Edgar.
Description:	272 p.
Notes:	Source: Dissertation Abstracts International, Volume: 65-02, Section: B, page: 1003.
Contained By:	Dissertation Abstracts International65-02B.
Subject:	Engineering, Metallurgy. -
Online resource:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3122586
ISBN:	0496699342

Mechanics and mechanisms of ultrasonic metal welding.
de Vries, Edgar.

Mechanics and mechanisms of ultrasonic metal welding. - 272 p.

Source: Dissertation Abstracts International, Volume: 65-02, Section: B, page: 1003.

Thesis (Ph.D.)--The Ohio State University, 2004.

During ultrasonic welding of sheet metal, normal and shear forces act on the parts to be welded and the weld interface. These forces are a result of the ultrasonic vibrations of the tool, pressed onto the parts to be welded. Furthermore they determine the weld quality and the power that is needed to produce the weld. The main goal in this study is to measure and calculate the tangential forces during ultrasonic metal welding that act on the parts and the weld interface and correlate them to weld quality. In this study a mechanics based model was developed which included a model for the temperature generation during welding and its effect on the mechanical material properties. This model was then used to calculate the interface forces during welding. The model results were in good agreement with the experimental results, which included the measured shear force during welding.

ISBN: 0496699342Subjects--Topical Terms:

1023648
Engineering, Metallurgy.

Mechanics and mechanisms of ultrasonic metal welding.
LDR:02951nmm 2200325 4500 001 1850604
005 20051207082633.5
008 130614s2004 eng d
020 $a 0496699342
035 $a (UnM)AAI3122586
035 $a AAI3122586
040 $a UnM $c UnM
100 1 $a de Vries, Edgar. $3 1938523
245 1 0 $a Mechanics and mechanisms of ultrasonic metal welding.
300 $a 272 p.
500 $a Source: Dissertation Abstracts International, Volume: 65-02, Section: B, page: 1003.
500 $a Adviser: Karl Graff.
502 $a Thesis (Ph.D.)--The Ohio State University, 2004.
520 $a During ultrasonic welding of sheet metal, normal and shear forces act on the parts to be welded and the weld interface. These forces are a result of the ultrasonic vibrations of the tool, pressed onto the parts to be welded. Furthermore they determine the weld quality and the power that is needed to produce the weld. The main goal in this study is to measure and calculate the tangential forces during ultrasonic metal welding that act on the parts and the weld interface and correlate them to weld quality. In this study a mechanics based model was developed which included a model for the temperature generation during welding and its effect on the mechanical material properties. This model was then used to calculate the interface forces during welding. The model results were in good agreement with the experimental results, which included the measured shear force during welding.
520 $a With the knowledge of the forces that act at the interface it might be possible to control weld quality (strength) and avoid sonotrode welding (sticking of the sonotrode to the parts). Without a solution to these two problems USMW will never be applicable to large scale automated production use, despite its advantages.
520 $a In the experiments the influence of part dimensions, friction coefficient, normal force and vibration amplitude on weld quality and sonotrode adhesion were examined.
520 $a The presented model is capable of predicting and explaining unfavorable welding conditions, therefore making it possible to predetermine weld locations on larger parts or what surface preparation of the parts to be welded would lead to an improved welding result. Furthermore shear force at the anvil measured during welding could be correlated to changing welding conditions.
520 $a This is a new approach of explaining the process of USMW, because it is based on mechanical considerations. The use of a shear force measuring anvil has the potential to be implemented into welding systems and the shear force would provide an additional means of process control.
590 $a School code: 0168.
650 4 $a Engineering, Metallurgy. $3 1023648
650 4 $a Engineering, Materials Science. $3 1017759
690 $a 0743
690 $a 0794
710 2 0 $a The Ohio State University. $3 718944
773 0 $t Dissertation Abstracts International $g 65-02B.
790 1 0 $a Graff, Karl, $e advisor
790 $a 0168
791 $a Ph.D.
792 $a 2004
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3122586