Dual testing machine that incorporates ultrasonic testing and compressibility testing

Patent metadata

Field	Value
Publication number	US-11635358-B2
Application number	US-202117338095-A
Country	US
Kind code	B2
Filing date	Jun 3, 2021
Priority date	Feb 1, 2019
Publication date	Apr 25, 2023
Grant date	Apr 25, 2023

Abstract

A testing machine comprising: (a) a transmitter; (b) a receiver opposing the transmitter; and (c) a compressibility sensor in communication with the transmitter, the receiver, or both, wherein the testing machine transmits a signal between the transmitter and the receiver to perform ultrasonic testing and further performs compressibility testing of one or more objects positioned between the transmitter and the receiver.

First claim

The invention claimed is:

1. A testing machine comprising:
a. a transmitter;
b. a receiver opposing the transmitter;
c. a compressibility sensor in communication with the transmitter, the receiver, or both;
d. a compression plate adapted to support one or more objects, wherein the receiver is aligned with an aperture of the compression plate so that the receiver communicates with the one or more objects through the aperture when the compression plate is compressed towards the receiver; and
e. a controller to control when the testing machine performs ultrasonic testing, compressibility testing, or both, wherein the testing machine is part of a closed-loop system and the controller communicates with an electronic device to relay results of the ultrasonic testing, the compressibility testing, or both to a manufacturing stage;
wherein the testing machine transmits a signal between the transmitter and the receiver to perform the ultrasonic testing and further performs the compressibility testing on the one or more objects positioned between the transmitter and the receiver.

2. The testing machine according to claim 1 , wherein the receiver is located in a base of the testing machine and the transmitter is mounted to a distal end of a shaft that movably opposes the receiver; and wherein the transmitter compresses the one or more objects between the transmitter and the receiver and communicates with the compressibility sensor to measure one or more values of the compressibility testing.

3. The testing machine according to claim 2 , wherein the base of the testing machine supports the compression plate by one or more biasing members.

4. The testing machine according to claim 3 , wherein the testing machine includes a piston plate mounted to the shaft, and a piston plate insert is secured to the piston plate and configured to compress the one or more objects between the piston plate insert and the compression plate.

5. The testing machine according to claim 4 , wherein the piston plate inserts includes a piston face protruding from a surface of the piston plate inserts.

6. The testing machine according to claim 5 , wherein the transmitter extends through the piston plate, the piston plate insert, or both to transmit the signal to the receiver for the ultrasonic testing.

7. The testing machine according to claim 6 , wherein the piston plate insert includes a compressibility portion having the piston face and an ultrasonic testing portion that houses the transmitter of the testing machine.

8. The testing machine according to claim 7 , wherein the one or more objects are adapted to be initially compressed between compression plate and the compressibility portion, moved in a manufacturing direction, and then compressed between the ultrasonic testing portion and the compression plate to transmit the signal between the transmitter and the receiver.

9. The testing machine according to claim 7 , wherein the one or more objects are initially compressed between the ultrasonic testing portion and the compression plate to transmit the signal between the transmitter and the receiver, moved in a manufacturing direction, and then compressed between the compression plate and the compressibility portion.

10. The testing machine according to claim 7 , wherein the piston plate inserts includes an aperture that receives a key of the piston plate to maintain a position of the piston plate insert relative to the piston plate.

11. The testing machine according to claim 10 , wherein the piston plate insert is magnetically secured to the piston plate.

12. The testing machine according to claim 1 , wherein the testing machine determines a Young's modulus and compressibility characteristics of the one or more objects in a nondestructive manner.

13. A manufacturing line for friction material of brake pads, comprising a plurality of inline testing machines according to claim 1 .

14. A method, comprising the steps of:
a. placing one or more friction materials of one or more brake pads on the receiver of the testing machine according to claim 1 ;
b. moving the transmitter opposing the receiver to compress the one or more friction materials between the transmitter and the receiver; and
c. performing ultrasonic testing and compressibility testing within a manufacturing line of the one or more friction materials to determine if each of the one or more friction materials meet one or more desired material properties.

15. The testing machine according to claim 3 , wherein the compression plate includes a contact sheet disposed on a surface of the compression plate that supports the one or more objects.

16. The testing machine according to claim 15 , wherein the relayed results of the ultrasonic testing, the compressibility testing, or both are utilized to adjust manufacturing parameters of the manufacturing stage.

17. The testing machine according to claim 16 , wherein the ultrasonic testing and the compressibility testing are done simultaneously.

18. The testing machine according to claim 16 , wherein the ultrasonic testing and the compressibility testing are done sequentially.

19. The testing machine according to claim 18 , wherein the ultrasonic testing is completed prior to the compressibility testing.

20. The testing machine according to claim 18 , wherein the ultrasonic testing is completed after the compressibility testing.

Assignees

• Akebono Brake Ind

Inventors

• Roszman Eric J

Classifications

• G01N3/02 Primary

  Details · CPC title

• G01N2203/0085

  Compressibility · CPC title

• G01N29/043

  in the interior, e.g. by shear waves · CPC title

• G01N2203/0019

  Compressive · CPC title

• G01N2203/0658

  using acoustic or ultrasonic detectors · CPC title