Cladding Structure with Transverse Secondary Bands
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Solution Overview
Problem
Machine components subjected to cyclic loading often experience premature fatigue and crack formation, leading to costly maintenance and potential catastrophic failure, as existing cladding strategies fail to effectively inhibit crack propagation in inter-pass clad boundaries.
Innovation Solution
A cladding structure featuring primary and secondary bands of cladding material deposited on a machine component's core, where primary bands are adjacent and abutting, and secondary bands are oriented transverse to inhibit crack propagation along inter-pass clad boundaries, thereby reducing stress concentrations and preventing crack propagation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Duration of action of moving object
If machine components are subjected to cyclic loading, then operational functionality is maintained, but premature fatigue and crack formation occur
Solution Approach 1:
Different regions of the cladding are given different orientations to address local stress conditions. Primary and secondary bands are oriented differently to provide enhanced fatigue resistance in specific directions where stress concentrations are most likely to occur during cyclic loading.
Solution Approach 2:
The cladding creates a composite structure with primary and secondary bands having different orientations and potentially different material compositions. This composite cladding structure provides superior fatigue resistance compared to conventional single-layer cladding by distributing cyclic stresses more effectively throughout the multi-directional structure.
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
The described cladding structure effectively inhibits crack propagation, reducing maintenance costs and extending the service life of machine components by interrupting crack paths and distributing stresses more uniformly, thus preventing critical failures.
Implementation Method 1
cladding the machine component may make the component more resistant to damage or failure by distributing stresses more uniformly across or through the materials of the machine component, and thereby reducing localized stress concentrations
Implementation Method 2
each of the secondary bands are oriented transverse to the primary bands to inhibit propagation of cracks through the cladding along directions of the primary bands
Implementation Method 3
a cladding extending throughout the at least one fatigue sensitive region. The cladding is formed by a set of primary bands of cladding material deposited upon and bonded to the core
Data Source
AI summary
A cladding structure and method for cladding machine components to inhibit crack propagation includes at least one set of primary bands, with each primary band being deposited adjacent to and abutting at least one other primary band, forming at least one inter-pass clad boundary, and at least one set of secondary bands deposited in a spaced configuration and oriented so as to intersect at least one inter-pass clad boundary.