A method for testing damping performance of a composite diaphragm of a headphone

By cutting and folding sample pieces of the composite diaphragm for headphones, and using a universal tensile testing machine to test the damping performance of the composite diaphragm, the problems of long testing cycles and large errors in existing technologies are solved, and a rapid and accurate evaluation of damping performance is achieved.

CN116893103BActive Publication Date: 2026-05-29深圳市赫裕技术有限公司
3 Cites 0 Cited by

Patent Information

Application Number
CN202310925957.6
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2023-07-26
Publication Date
2026-05-29
Estimated Expiration
2043-07-26

AI Technical Summary

Technical Problem

Existing rheometers cannot directly test the damping performance of composite diaphragms in headphones, and the method of manufacturing composite diaphragms into finished headphones for testing is time-consuming and prone to errors, affecting test reliability and development efficiency.

Method used

The composite diaphragm of the earphone is cut into sample pieces, folded along its length and clamped between steel sheets, and subjected to a compression test using a universal tensile testing machine. The damping performance is quantified by recording the difference in the work done.

Benefits of technology

It enables rapid and accurate evaluation of damping performance, is applicable to multi-layered headphone composite diaphragms, and provides short testing time and accurate results.

✦ Generated by Eureka AI based on patent content.
Patent Text Reader

Abstract

The application discloses a kind of earphone composite diaphragm sheet damping performance test methods, comprising the following steps: step S1, cutting sample piece;Step S2, clamping sample piece: along the length direction of sample piece, sample piece is folded, so that the two ends of sample piece are completely coincident, then the two ends of sample piece are coincident and clamped between two steel sheets;Step S3, install sample piece: the steel sheet with sample piece is clamped is placed on the clamp of universal tensile testing machine;Step S4, press test: start tensile testing machine, start press test, record the work value G1 in the process of tensile testing machine press, with the work value G2 in the process of tensile testing machine rebound, G1 and G2 difference is used to quantify the damping performance of earphone composite diaphragm sheet.The damping performance of earphone composite diaphragm sheet is evaluated and quantified by work loss, not only has the characteristics of convenient testing, short testing time, but also the evaluation of the damping performance of earphone composite diaphragm sheet is more accurate.
Need to check novelty before this filing date? Find Prior Art