Transient characteristics of post-welding shift of TO-can pigtail package

Cheung, Y.M.; Yiu, C.H.

doi:10.1109/eptc.2003.1298728

Cited by 3 publications

(3 citation statements)

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“…The sensor signal in the first 8ms is affected by high voltage discharge during the laser welding process and its reading does not represent actual PWS. Details of the experimental setup and the sensor operating principle are discussed in previous studies [5,6].…”

Section: Methodsmentioning

confidence: 99%

“…The three sensors simultaneously monitor the position of the upper sleeve before and after welding. The magnitude and trajectory of actual PWS can be calculated from the three sensor signals [5]. The sensor signal in the first 8ms is affected by high voltage discharge during the laser welding process and its reading does not represent actual PWS.…”

Section: Methodsmentioning

confidence: 99%

“…In addition, not much work is done on dynamic PWS. A glance of transient measurement can be found in [3,5]. The analysis of transient measurement is more difficult because the welding parts can shift along different trajectories and settle down with a PWS of similar magnitude.…”

Section: Introductionmentioning

confidence: 98%

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Investigation into transient characteristics of post-welding shift for opto-electronic pigtail package

Yiu

Cheung

Proceedings Electronic Components and Technology, 2005. ECTC '05.

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We study transient post-welding shift (PWS) with experiment and simulation. Measurement of PWS with noncontact displacement sensor reveals that a typical laser welding of TO-can pigtail package involves transient PWS with multiple characteristic time scales. Finite element modeling (FEM) of a three-dimensional structure with thermo-mechanical coupling helps us visualize the dynamics of the miniscule PWS. This study gives a better understanding on the physical process of transient PWS.

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Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%