Harness Coating Wear Detection Using Electromagnetic Dye Inspection
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Solution Overview
Problem
Electrical harnesses with non-metallic sheathing experience undue wear due to metallic clips, leading to protection failure under vibration, which is not effectively monitored or addressed by existing methods.
Innovation Solution
A method involving a protective coating with a dye that absorbs specific electromagnetic wavelengths, allowing for inspection of wear by applying UV or infrared light and using a smartphone to evaluate the remaining dye coverage, enabling quantification of coating wear and facilitating recoating when necessary.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If metallic clips are used to hold electrical harnesses, then the holding strength is improved, but the wear on non-metallic sheathing increases due to hardness difference
Solution Approach 1:
The patent applies a protective coating with different properties (softer, more wear-resistant) only at the specific location where the metallic clip contacts the sheathing. This local modification allows the sheathing to maintain its original properties elsewhere while gaining enhanced wear resistance at the critical contact point, resolving the contradiction between holding strength and wear protection.
Solution Approach 2:
The patent creates a composite structure by applying a protective coating layer over the non-metallic sheathing. This composite combines the structural properties of the original sheathing with the wear-resistant properties of the coating material, allowing the assembly to withstand the hardness difference with metallic clips without excessive wear.
2Object-affected harmful factors
If protective coating is applied to sheathing, then wear protection is improved, but the ability to detect wear condition deteriorates due to lack of visual indicators
Solution Approach 1:
The patent incorporates dye particles within the protective coating that change color or provide visual contrast when the coating is worn or damaged. This allows the wear condition to be easily detected by visual inspection or electronic sensors, resolving the contradiction between providing wear protection and enabling wear detection. The dye acts as an embedded indicator that reveals coating integrity without compromising protection.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Effectively detects and quantifies wear on electrical harness coatings, allowing for timely recoating and reducing the risk of damage from vibration, while also providing protection against bacterial and fungal growth.
Implementation Method 1
A protective coating is provided about the first component, and the protective coating having a dye which absorbs a particular range of electromagnetic wavelengths
Data Source
AI summary
A method of inspecting a component includes the steps of identifying a component having an outer surface of a first hardness, and mounted with a holding member of a second hardness which is greater than the first hardness. A protective coating is provided about the first component, and the protective coating having a dye which absorbs a particular range of electromagnetic wavelengths. The amount of the dye remaining in the coating is inspected to identify an amount of wear of the coating.