Loop-Shaped Sensor Fixing Device for Rock Damage Testing
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Solution Overview
Problem
Conventional fixing methods for acoustic emission test sensors, such as adhesive tape and rubber bands, fail to ensure accurate positioning, lead to signal noise, and are inadequate for deformation tests, limiting the accuracy and authenticity of rock damage testing.
Innovation Solution
A fixing device comprising a loop-shaped frame with installation bases, fixing assemblies, and mechanisms that automatically adjust the sensors to maintain consistent positions with the test piece, using split ring springs and locking structures to secure the sensors and manage wire output, ensuring accurate and stable sensor placement during deformation tests.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If adhesive tape is used to fix sensors, then sensors can be held in place, but the pressure increases and damages the sensors
Solution Approach 1:
A dedicated sensor fixing device serves as an intermediary between the sensor and the test piece. This device provides a controlled mounting mechanism that distributes pressure evenly across the sensor surface, preventing direct high-pressure contact that would damage the sensor while ensuring stable fixation for accurate acoustic emission detection.
2Reliability
If rubber band is used to fix sensors, then sensors can be held in place, but good contact between sensors and samples cannot be guaranteed
Solution Approach 1:
The sensor fixing device incorporates self-adjusting mechanisms that automatically ensure optimal sensor-sample contact. The device includes positioning features and adjustment capabilities that allow the sensor to self-align and maintain consistent contact pressure with the test piece surface, eliminating the need for manual adjustment while guaranteeing measurement quality.
3Ease of manufacture
If conventional fixing methods are used, then sensors can be attached to test pieces, but accurate positioning of sensors cannot be ensured
Solution Approach 1:
The sensor fixing device incorporates pre-configured positioning features such as定位 holes, guide rails, or marked reference points that establish the correct sensor position before the sensor is actually mounted. This preliminary positioning setup ensures that sensors are placed at the exact required locations on the test piece, achieving both ease of installation and high positioning precision.
4Ease of manufacture
If conventional fixing methods are used, then sensors can be attached to test pieces, but signal noise and artifacts are produced
Solution Approach 1:
The sensor fixing device is designed to extract or eliminate sources of signal interference. This includes using non-conductive mounting materials to prevent electrical noise, incorporating vibration isolation elements to reduce mechanical noise, and designing the mounting structure to avoid creating acoustic artifacts that would contaminate the acoustic emission signals being measured.
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 ensures precise sensor positioning, reduces signal noise, and extends sensor lifespan by maintaining consistent stress and coupling with the test piece, enhancing the accuracy and authenticity of rock damage testing results.
Implementation Method 1
each of the fixing assemblies comprises: a split ring spring for binding each acoustic emission test sensor in each installation base
Implementation Method 2
acoustic emission test sensors for rock damage testing
Data Source
AI summary
A fixing device for acoustic emission test sensors for rock damage testing, the device including: a fixing frame; installation bases operating to accommodate the acoustic emission test sensors, respectively; fixing assemblies operating to fix the acoustic emission test sensors in the installation bases; and installation mechanisms operating to arrange the installation bases on the fixing frame. The fixing frame is an assembled loop-shaped frame and includes between two and four frame members and corresponding fixing structures; and the frame members are assembled into an integrated loop-shaped frame by the fixing structures. Each of the installation bases is a cylinder structure. The cylinder structure includes: a cavity corresponding to an outer edge of each of the acoustic emission test sensors, and a wall including a gap for leading out wires of each sensor.