Acoustic emission toughness testing for PDC, PCBN, or other hard or superhard material inserts
First Claim
1. An acoustic emission testing device, comprising:
- a testing sample comprising a hard surface;
an acoustic sensor communicably coupled to the testing sample;
an indenter releasably coupled to the hard surface, the indenter being tougher than the testing sample; and
a load exerted onto the indenter, the indenter transferring the load onto the hard surface,wherein the load is increased to a peak load at a ramp up rate, the peak load is held for a time period, and the load is decreased at a ramp down rate, andwherein the acoustic sensor senses acoustic events occurring within the testing sample.
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Abstract
An acoustic emissions testing device includes a testing sample including a hard surface, an acoustic sensor, an indenter coupled to the hard surface, and a load. The load is exerted on the indenter, which transfers the load to the hard surface. The acoustic sensor is communicably coupled to the testing sample and detects one or more acoustic events occurring within the testing sample. An acoustic emissions testing system includes a data recorder coupled to the testing device. The data recorder records the data from testing device. Based upon the data received, the toughness of the sample is objectively determined and can be ranked comparatively to the toughness of other samples. The load is ramped up to a peak load, held for a period of time, and then ramped down.
55 Citations
31 Claims
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1. An acoustic emission testing device, comprising:
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a testing sample comprising a hard surface; an acoustic sensor communicably coupled to the testing sample; an indenter releasably coupled to the hard surface, the indenter being tougher than the testing sample; and a load exerted onto the indenter, the indenter transferring the load onto the hard surface, wherein the load is increased to a peak load at a ramp up rate, the peak load is held for a time period, and the load is decreased at a ramp down rate, and wherein the acoustic sensor senses acoustic events occurring within the testing sample. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 17)
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12. An acoustic emission testing system, comprising:
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an acoustic emission testing device comprising; a testing sample comprising a hard surface; an acoustic sensor communicably coupled to the testing sample; an indenter releasably coupled to the hard surface, the indenter being tougher than the testing sample; and a load exerted onto the indenter, the indenter transferring the load onto the hard surface; and a data recorder communicably coupled to the acoustic emission testing device, the data recorder receiving data from the acoustic emission testing device, wherein the load is increased to a peak load at a ramp up rate, the peak load is held for a time period, and the load is decreased at a ramp down rate, and wherein the acoustic sensor senses acoustic events occurring within the testing sample. - View Dependent Claims (13, 14, 15, 16, 18, 19, 20)
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21. A method for determining the toughness of a testing sample, comprising:
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providing an acoustic emission system, the acoustic emission testing system comprising; an acoustic emission testing device, comprising; a testing sample comprising a hard surface; an acoustic sensor communicably coupled to the testing sample; an indenter releasably coupled to the hard surface, the indenter being tougher than the testing sample; and a load exerted onto the indenter, the indenter transferring the load onto the hard surface; and a data recorder communicably coupled to the acoustic emission testing device, the data recorder receiving data from the acoustic emission testing device, applying the load onto the indenter, the indenter transferring the load onto the testing sample; obtaining data from the acoustic emission device; detecting acoustic events occurring within the testing sample; and objectively calculating the toughness of the testing sample. - View Dependent Claims (22, 23, 24, 25, 26, 27, 28, 29, 30, 31)
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Specification