 |
International Society of Science and Applied Technologies |
| Investigation of Residual Stress and Fatigue Reliability Enhancement in Polyimide-Coated Lead Conductor Wires | ||||
| Author |
Haitao Zhang
|
|||
| Co-Author(s) |
Bernard Li; Mingxiao Jiang
|
|||
| Abstract | In the field of Implantable Electric Stimulation, PTFE and ETFE coatings have conventionally been employed as insulation materials for metal wires used in lead conductor coils. Recently, due to its superior insulation performance, polyimide coating starts to find wide application as insulation materials for lead conductors. It was observed that coated wire has a higher fatigue performance than bare wire. It is expected that residual stress may be present following the coating process. This study aims to develop an exact analytical thermal elastic solution to assess the residual stress of the metal wire due to the polyimide coating. The analytical result indicates that a compression residual stress is on the wire which may enhance the fatigue life of the wire.
|
|||
| Keywords | Implantable Medical Devices, Fatigue Reliability, Thermal Residual Stress, P-S-N (probabilistic stress-life), Accelerated Life Testing (ALT) | |||
| Article #: RQD2025-63 | ||||
Proceedings of 30th ISSAT International Conference on Reliability & Quality in Design |