Automated Wood Hardness Profiling for Decay Detection
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Solution Overview
Problem
Current methods for inspecting wooden structures, such as utility poles, lack effective and cost-efficient alternatives for detecting incipient decay and external decay below ground without excavation, relying heavily on manual and invasive techniques that are prone to variability and high costs.
Innovation Solution
A probing device with a shaft, distance sensor, blade, and mechanical sensor, coupled with a resistance mechanism, which measures the hardness of wood by penetrating the structure at varying angles and depths, providing a hardness profile for condition assessment and structural integrity evaluation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If manual inspection techniques are used, then inspector experience and judgment can identify decay, but the results are variable and dependent on inspector diligence
Solution Approach 1:
The patent replaces manual mechanical inspection (hammer sounding, visual examination) with an automated mechanical probing system that uses a blade to physically penetrate wood and sensors to measure penetration resistance, eliminating inspector variability while maintaining detection capability
Solution Approach 2:
The device allows the wood structure itself to provide the measurement data through its resistance to blade penetration, with the hardness of the wood directly indicating decay presence without requiring external inspector judgment
2Measurement precision
If sound and bore procedures are used, then internal decay can be detected, but the process is invasive and requires boring inspection holes
Solution Approach 1:
The device performs a partial version of the bore procedure by using a blade that penetrates only as deep as the decay affects the wood hardness, rather than requiring complete bore holes through the structure, thus detecting internal decay with minimal intrusion
Solution Approach 2:
The blade acts as an intermediary between the inspection device and the wood structure, translating internal decay conditions into measurable penetration resistance without requiring direct access to deep internal areas through boring
3Measurement precision
If visual inspection is used, then gross defects can be identified, but the method cannot detect incipient decay below ground level
Solution Approach 1:
The patent replaces visual inspection with a mechanical probing system that physically interacts with the wood at ground level and below, enabling detection of incipient decay through penetration resistance measurements that visual methods cannot provide
Solution Approach 2:
The device performs preliminary mechanical assessment at ground level before more invasive excavation or boring is needed, identifying areas requiring further investigation through automated hardness profiling
4Productivity
If automated probing devices are developed, then inspection efficiency can be improved, but device complexity increases
Solution Approach 1:
The device segments the inspection function into distinct components (blade for penetration, sensors for measurement, processing system for analysis) that can operate independently and be manufactured separately, improving productivity while managing complexity through modular design
Solution Approach 2:
The probing device is designed to perform multiple inspection functions (hardness measurement, decay detection, structural assessment) through a single integrated system, improving productivity across different inspection scenarios without proportionally increasing complexity
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 device enables accurate, minimally invasive, and repeatable profiling of wooden structures, detecting changes in hardness indicative of decay, allowing for timely remedial actions and reducing the need for costly replacements.
Implementation Method 1
a blade coupled to a resistance mechanism and a mechanical sensor for measuring the hardness of wood in a structure
Data Source
AI summary
The present invention pertains to a device, system, and method for evaluating the condition of a wooden structure by automated profiling of the hardness of the structure. More particularly, the present invention is directed towards a probing device comprising a blade coupled to a resistance mechanism and a mechanical sensor for measuring the hardness of wood in a structure; a system comprising such a device, and a computing device coupled to the device that outputs the hardness measurements of the device; and a method for operating such a device and determining the condition of wood by identifying changes in hardness in a wooden structure.