Mechanical Adhesion Member for Non-Destructive Bond Testing
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Solution Overview
Problem
Conventional methods for assessing adhesion strength in electronic products with dissimilar materials result in structural damage during destructive testing, leading to discarded samples and inadequate quality control, especially for expensive products with insufficient sampling.
Innovation Solution
A mechanical member comprising a main structural portion, bridging portion, and inspection portion, made through injection molding, allows for non-destructive testing by cutting off the bridging portion to evaluate adhesion strength between the main structural portion and the housing, maintaining the integrity of the main structural portion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If destructive testing is performed to evaluate adhesion strength, then adhesion strength can be detected, but the main structural portion is damaged and the product must be discarded
Solution Approach 1:
The mechanical member is divided into three distinct portions: a main structural portion, a bridging portion, and an inspection portion. The inspection portion is specifically designed to be tested while the main structural portion remains intact. By cutting the bridging portion and testing the inspection portion, adhesion strength is evaluated without damaging the main structural portion, thus resolving the contradiction between measurement precision and structural integrity.
Solution Approach 2:
The inspection portion serves as an intermediary element that substitutes for the main structural portion in the testing process. It is attached to the housing in the same manner as the main structural portion, allowing it to accurately reflect adhesion strength while being isolated from the main structure by the bridging portion. This intermediary approach enables testing without compromising the main structural integrity.
2Measurement precision
If sampling inspection is performed on expensive electronic products, then adhesion strength can be evaluated, but the sampling quantity is insufficient due to high costs
Solution Approach 1:
The inspection portion is designed as a disposable test element that can be easily removed after testing. By using this separate inspection portion rather than testing the entire product, the cost per test is reduced, allowing for increased sampling quantities in quality control processes for expensive electronic products.
Solution Approach 2:
The inspection portion is created as a copy or replica of the main structural portion's attachment interface. It is made from the same materials and attached in the same manner, allowing it to serve as a test substitute that accurately represents the main structure's adhesion characteristics without requiring the full product to be destroyed for testing.
3Measurement precision
If the inspection portion is disposed of after testing, then testing accuracy is maintained, but manufacturing cost increases due to inability to reuse
Solution Approach 1:
While the inspection portion is designed for single-use testing to maintain accuracy, the overall mechanical member structure allows the main structural portion to be recovered and reused. The inspection portion can be detached after testing, leaving the main structural portion intact for continued use, thus recovering value from the non-consumed portions of the mechanical member.
Data Source
AI summary
A mechanical member of detecting adhesion strength is assembled with a housing. The mechanical member includes a main structural portion, a bridging portion and an inspection portion. The main structural portion is adhered to the housing. The bridging portion is connected to the main structural portion and has a cuttable property. The inspection portion is connected to a position of the bridging portion different from the main structural portion, and is adhered to the housing. The inspection portion is pulled or pushed by an external force when the bridging portion is cut off, so as to evaluate adhesion strength between the main structural portion and the housing according to a separation degree between the inspection portion and the housing.