Simple clamp for testing sound velocity and sound attenuation of solid material by insertion substitution method

Abstract

The utility model provides a simple clamp for testing sound velocity and sound attenuation of a solid material through an insertion substitution method, and belongs to the technical field of material testing. The simple clamp for testing the sound velocity and sound attenuation of the solid material through the insertion substitution method comprises a base. End heads are arranged at the two ends of the base, through holes are formed in the two end heads, the two through holes are coaxially formed, and the two round pipes and the two through holes are coaxially formed. When the device is used and a solid material needs to be tested, the tested material is placed between the two round pipes, then the two round pipes can slide, the two round pipes get close to each other to clamp and limit the tested material, the transmitting transducer and the receiving transducer penetrate through the two through holes respectively, and the transmitting transducer and the receiving transducer are connected with the two through holes under the coaxial action of the two round pipes and the two through holes. The coaxiality among the transmitting transducer, the receiving transducer and the test material can be improved, and then the test accuracy can be improved.

Description

Technical Field

[0001] The present application relates to the field of material testing, and in particular to a simple fixture for testing the sound velocity and sound attenuation of solid materials by an insertion substitution method. Background Art

[0002] The structure of ultrasonic transducers used in underwater acoustic detection, non-destructive testing, and medical ultrasonic imaging diagnosis is generally composed of a backing, a piezoelectric sheet, a matching layer, and an acoustic lens. The acoustic impedance of piezoelectric materials is relatively high. The acoustic impedance of piezoelectric ceramics or single crystals is generally around 35MRayl, and the acoustic impedance of piezoelectric or single crystal composite materials is generally around 20MRayl. In general, the backing material is expected to have a larger acoustic attenuation to reduce ringing, make the signal cleaner, and improve the resolution; the matching layer material is expected to have a smaller acoustic attenuation so that more signals can pass through, thereby improving sensitivity. Different materials have different sound propagation speeds and acoustic impedances. When designing and making backings and matching layers, it is necessary to measure the sound velocity and acoustic attenuation of the materials in order to select backings and matching layers with appropriate acoustic impedance and thickness.

[0003] The insertion-substitution method is the primary method for measuring the sound velocity and attenuation of solid materials. However, single-sample insertion-substitution methods can produce errors and low accuracy. These errors stem from two main sources: First, the relative position of the transmitting and receiving transducers is offset, tilted, or not aligned on the same central axis, resulting in inaccurate signal amplitude data. Second, the sheet sample is not perpendicular to the central axis of the transducer, resulting in a sound path greater than the sample thickness, which can lead to inaccurate time measurements and thus errors. Utility Model Content

[0004] In order to make up for the above shortcomings, the present application provides a simple fixture for testing the sound velocity and sound attenuation of solid materials by the insertion substitution method, aiming to improve the problem of errors and low accuracy in measuring the sound velocity and sound attenuation by the single sample insertion substitution method.

[0005] An embodiment of the present application provides a simple fixture for testing the sound velocity and sound attenuation of solid materials using an insertion substitution method, comprising a base.

[0006] Both ends of the base are provided with end caps, and a through hole is opened inside the two end caps, the two through holes are symmetrically arranged, and the two through holes are coaxially arranged. The upper surface of the base is provided with a placement slide groove, and a round tube is slidably placed inside the placement slide groove. There are two round tubes slidably placed, the two round tubes are symmetrically arranged, the two round tubes are coaxially arranged, and the two round tubes and the two through holes are coaxially arranged.

[0007] In a specific embodiment, the bottom surface of the base is provided with supporting legs, and the bottom ends of the supporting legs are provided with foot plates.

[0008] In a specific embodiment, four legs are provided, and the four legs are fixedly connected to four corners of the lower surface of the base respectively.

[0009] In a specific embodiment, anti-skid grooves are provided on both sides of the base, and a plurality of anti-skid grooves are provided, and the plurality of anti-skid grooves are evenly arranged.

[0010] In a specific embodiment, threaded holes are provided on the tops of the two end heads, and the bottom ends of the threaded holes are connected to the through holes.

[0011] In a specific embodiment, the placement chute is located between the two end heads, and the placement chute is configured to be V-shaped.

[0012] In a specific embodiment, first elastic rubber washers are provided on opposite surfaces of the two circular tubes, and the two first elastic rubber washers are provided correspondingly.

[0013] In a specific embodiment, a second elastic rubber washer is provided at one end of the two circular tubes away from the first elastic rubber washer, and the two second elastic rubber washers are respectively provided corresponding to the two end heads.

[0014] The beneficial effect of the utility model is as follows: the utility model obtains a simple fixture for testing the sound velocity and sound attenuation of solid materials by the insertion substitution method through the above design. When in use, the two circular tubes and the two through holes are coaxially arranged. When the solid material needs to be tested, the test material is placed between the two circular tubes, and then the two circular tubes can be slid. The two circular tubes are close to each other to clamp and limit the test material. The transmitting transducer and the receiving transducer are respectively inserted into the two through holes. Under the action of the coaxiality of the two circular tubes and the two through holes, the coaxiality among the transmitting transducer, the receiving transducer and the test material can be improved, thereby improving the accuracy of the test. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions of the implementation methods of the present application, the following is a brief introduction to the drawings required for use in the implementation methods. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying any creative work.

[0016] Figure 1 This is a schematic diagram of the first-view structure of a simple fixture for testing the sound velocity and sound attenuation of solid materials using the insertion substitution method provided in an embodiment of the present application;

[0017] Figure 2A schematic diagram of the structure from a second perspective of a simple fixture for testing the sound velocity and sound attenuation of solid materials using the insertion substitution method provided in an embodiment of the present application;

[0018] Figure 3 A schematic diagram of the placement chute structure provided in an embodiment of the present application;

[0019] Figure 4 Schematic diagram of two circular tube structures provided for the implementation scheme of this application.

[0020] In the figure: 100 - base; 101 - leg; 102 - foot plate; 103 - anti-slip groove; 110 - end; 111 - through hole; 112 - threaded hole; 120 - placement slide groove; 130 - round tube; 131 - first elastic rubber gasket; 132 - second elastic rubber gasket. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present application will be described below in conjunction with the drawings in the embodiments of the present application.

[0022] To make the purpose, technical solutions, and advantages of the embodiments of this application more clear, the technical solutions in the embodiments of this application will be clearly and completely described below in conjunction with the drawings in the embodiments of this application. Obviously, the described embodiments are part of the embodiments of this application, not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0023] See also Figure 1 The present application provides a simple fixture for testing the sound velocity and sound attenuation of solid materials using an insertion substitution method, including a base 100.

[0024] See also Figure 1-4 The bottom surface of the base 100 is provided with a support leg 101, and the bottom end of the support leg 101 is provided with a foot plate 102. There are four support legs 101, and the four support legs 101 are respectively fixedly connected to the four corners of the lower surface of the base 100. Anti-slip grooves 103 are provided on both sides of the base 100. There are several anti-slip grooves 103, and the several anti-slip grooves 103 are evenly arranged. The anti-slip grooves 103 make it convenient for the inspection personnel to hold the base 100 and not easily fall out of their hands. Ends 110 are provided at both ends of the base 100, and through holes 111 are provided inside the two end heads 110. The two through holes 111 are symmetrically arranged and coaxially arranged.

[0025] In this embodiment, threaded holes 112 are provided at the tops of the two end caps 110, and the bottom ends of the threaded holes 112 are connected to the through holes 111. Bolts can be inserted into the threaded holes 112, and the bolts can enter the through holes 111 through the threaded holes 112. The transmitting transducer and the receiving transducer can respectively pass through the two through holes 111, and the bolts can fix the transmitting transducer and the receiving transducer.

[0026] In the specific setting, a placement groove 120 is opened on the upper surface of the base 100, and the placement groove 120 is located between the two end heads 110. The placement groove 120 is set to be V-shaped. A circular tube 130 is slidably placed inside the placement groove 120. There are two circular tubes 130 slidably placed, and the two circular tubes 130 are symmetrically arranged. The two circular tubes 130 are coaxially arranged. The two circular tubes 130 and the two through holes 111 are all coaxially arranged. The opposite surfaces of the two circular tubes 130 are both provided with first elastic rubber washers 131, and the two first elastic rubber washers 131 are correspondingly arranged.

[0027] In the present application, the material to be tested can be placed between the two circular tubes 130, and then the two circular tubes 130 can be slid. The two circular tubes 130 are close to each other to clamp and limit the test material. The two first elastic rubber washers 131 can prevent collision and friction between the circular tubes 130 and the material, and the circular tubes 130 can be prevented from damaging the test material.

[0028] In this embodiment, a second elastic rubber gasket 132 is provided at one end of the two circular tubes 130 away from the first elastic rubber gasket 131. The two second elastic rubber gaskets 132 are respectively arranged corresponding to the two end heads 110. The second elastic rubber gaskets 132 can prevent the circular tubes 130 from colliding with the end heads 110.

[0029] In the present application, during the test, the transmitting transducer and the receiving transducer are respectively inserted into the two through holes 111, and then the transmitting transducer transmits the sound wave signal, and the receiving transducer receives the sound wave signal, thereby obtaining the air measurement data, and then the test material is placed between the two circular tubes 130, and the two circular tubes 130 are close to each other to clamp and limit the test material, and then the transmitting transducer transmits the sound wave signal, and the receiving transducer receives the sound wave signal, thereby obtaining data on the impact of the test material on the sound wave signal, including time data and sound wave amplitude data.

[0030] Specifically, the working principle of the simple fixture for testing the sound velocity and sound attenuation of solid materials by the insertion substitution method is as follows: when in use, the two circular tubes 130 and the two through holes 111 are coaxially arranged. When the solid material needs to be tested, the test material is placed between the two circular tubes 130, and then the two circular tubes 130 can be slid close to each other to clamp and limit the test material. The transmitting transducer and the receiving transducer are respectively inserted into the two through holes 111. Under the coaxial action of the two circular tubes 130 and the two through holes 111, the coaxiality between the transmitting transducer, the receiving transducer and the test material can be improved, thereby improving the accuracy of the test.

[0031] The foregoing is merely an embodiment of the present application and is not intended to limit the scope of protection of the present application. Various modifications and variations are possible for those skilled in the art. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present application shall be included within the scope of protection of the present application. It should be noted that similar reference numerals and letters represent similar items in the following figures. Therefore, once an item is defined in one figure, it does not need to be further defined or explained in subsequent figures.

[0032] The above description is merely a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in this application should be included in the scope of protection of the present application. Therefore, the scope of protection of the present application should be based on the scope of protection of the claims.

Claims

1. A simple fixture for testing the sound velocity and sound attenuation of solid materials by insertion substitution method, characterized in that: include A base (100) is provided with end caps (110) at both ends of the base (100), a through hole (111) is provided inside the two end caps (110), the two through holes (111) are symmetrically arranged, and the two through holes (111) are coaxially arranged, a placement chute (120) is provided on the upper surface of the base (100), a circular tube (130) is slidably placed inside the placement chute (120), two circular tubes (130) are slidably placed, the two circular tubes (130) are symmetrically arranged, the two circular tubes (130) are coaxially arranged, and the two circular tubes (130) and the two through holes (111) are coaxially arranged.

2. The simple fixture for testing the sound velocity and sound attenuation of solid materials by the insertion substitution method according to claim 1, characterized in that: The bottom surface of the base (100) is provided with a supporting leg (101), and the bottom end of the supporting leg (101) is provided with a footboard (102).

3. The simple fixture for testing the sound velocity and sound attenuation of solid materials by the insertion substitution method according to claim 2, characterized in that: Four supporting legs (101) are provided, and the four supporting legs (101) are respectively fixedly connected to the four corners of the lower surface of the base (100).

4. The simple fixture for testing the sound velocity and sound attenuation of solid materials by the insertion substitution method according to claim 1, characterized in that: Anti-skid grooves (103) are provided on both sides of the base (100), and a plurality of anti-skid grooves (103) are provided, and the plurality of anti-skid grooves (103) are evenly arranged.

5. The simple fixture for testing the sound velocity and sound attenuation of solid materials by the insertion substitution method according to claim 1, characterized in that: The tops of the two end heads (110) are each provided with a threaded hole (112), and the bottom ends of the threaded holes (112) are both connected to the through hole (111).

6. The simple fixture for testing the sound velocity and sound attenuation of solid materials by the insertion substitution method according to claim 1, characterized in that: The placement chute (120) is located between the two end heads (110), and the placement chute (120) is configured to be V-shaped.

7. The simple fixture for testing the sound velocity and sound attenuation of solid materials by the insertion substitution method according to claim 1, characterized in that: The opposite surfaces of the two circular tubes (130) are both provided with first elastic rubber washers (131), and the two first elastic rubber washers (131) are correspondingly arranged.

8. The simple fixture for testing the sound velocity and sound attenuation of solid materials by the insertion substitution method according to claim 7, characterized in that: A second elastic rubber washer (132) is provided at one end of the two circular tubes (130) away from the first elastic rubber washer (131), and the two second elastic rubber washers (132) are respectively provided corresponding to the two end heads (110).

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