Equivalent Vibration Testing for Superabrasive Half-Breakdown Evaluation
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Solution Overview
Problem
The inconsistent test results obtained by piston and rocker-arm vibrating machines using the half-breakdown time test method for superabrasives, particularly in international trade, lead to non-comparable performance evaluations and trade disputes due to the lack of an equivalent test method for these machines.
Innovation Solution
An equivalent test method is developed to unify test results by calculating impact cycles and times for high-grade, medium-grade, and low-grade samples using both machines, adjusting impact times to achieve consistent unbroken ratios, and applying specific equations to convert and compare results across machines.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Weight of stationary object
If the piston vibrating machine is used for half breakdown time test, then the test can be completed with smaller size and weight, but the test results are inconsistent with those from rocker-arm vibrating machine
Solution Approach 1:
The patent applies parameter changes by establishing conversion relationships between different test parameters (impact cycles, impact time, vibration frequency) of the piston vibrating machine and rocker-arm vibrating machine. Through mathematical modeling and empirical formulas, the patent converts test results from one machine type to another, ensuring consistent measurement outcomes despite differences in machine parameters and test conditions.
2Productivity
If the rocker-arm vibrating machine is used for half breakdown time test, then more impact cycles and longer working time can be achieved, but the machine has larger size and weight
Solution Approach 1:
The patent creates a virtual copy of the rocker-arm vibrating machine's test results through the piston vibrating machine by establishing equivalent test conditions and conversion formulas. The piston vibrating machine replicates the testing function of the larger machine through parameter conversion, allowing users to obtain equivalent test data without requiring the heavier equipment.
3Reliability
If different test methods (half breakdown time vs unbroken ratio) are used, then each method has its own advantages, but the test processes and calculation formulas are completely different and complex
Solution Approach 1:
The patent creates a universal conversion system that can handle both half breakdown time test results and unbroken ratio test results. The established conversion formulas and equivalent test methods allow results from different test methodologies to be translated into a common evaluation framework, enabling multi-functional application of the conversion system across various test types.
4Measurement precision
If test results from piston and rocker-arm vibrating machines are not unified, then performance evaluation of superabrasives becomes inconsistent, but unifying the results requires complex equivalent test methods
Solution Approach 1:
The patent performs preliminary actions by pre-establishing conversion relationships, empirical formulas, and equivalent test parameters between the two machine types. These pre-developed conversion methods and reference data allow for straightforward transformation of test results without requiring complex real-time calculations or additional testing, thus achieving unified performance evaluation efficiently.
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
This method ensures consistent and comparable test results, reducing economic losses and trade disputes by allowing equivalent evaluation of superabrasives across different machines, facilitating international trade and academic exchanges.
Implementation Method 1
the impact tube loaded with superabrasives is driven to impact the superabrasives through the linear reciprocating motion of the piston
Implementation Method 2
the impact tube loaded with superabrasives is driven to impact the superabrasives through the swinging reciprocating motion
Data Source
AI summary
An equivalent test method of a piston vibrating machine and a rocker-arm vibrating machine applied in half breakdown time test, including: selecting three grades of samples in the same size specification; separately selecting frequencies of the piston vibrating machine and the rocker-arm vibrating machine; estimating impact times of the two vibrating machines for three grades of samples; setting up the impact times and separately impacting the samples with the two vibrating machines; sieving and weighing the impacted samples and obtaining the unbroken ratios; calculating impact cycles with an unbroken ratio of 50%; calculating the ratios of the impact cycles of the two vibrating machines for the samples; calculating an average of the ratios; calculating the relative percentages of impact cycle ratios for the three grades and assessing the linearity of the samples; and calculating equivalent impact cycles of the vibrating machines.