JPS60120245A - Ae sensor enclosing hammer - Google Patents

Abstract

PURPOSE:To facilitate the detection of internal defects and foreign materials, by providing a unitary body of a hammer, which excites a body to be checked, and an AE sensor, so that the sensor can be carried by hand. CONSTITUTION:A probe 1 encloses a hammer 11. The hammer 11 is attracted by a solenoid 13 and made to hit on a body to be checked 14 by a spring 12. Thus the body to be checked is excited. The signal is received by an AE sensor 15, which has a thin film 16 and encloses a contact medium at the tip. A case 2 supports the probe 1 with a degree of freedom, and encloses a driving power source (not shown) for hammer in the inside. In addition, the case 2 is provided with a switch 3, a knob for adjusting the hitting strength of the hammer 11, an arm 5 for expanding and contracting the probe, a cable 6, and the like.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Application of the Invention] The present invention relates to an AE sensor that detects internal defects and foreign objects present inside equipment.

[Background of the invention]

Acoustic emission lt lower AE! It is known that as an example of the application of this method, by exciting a test object by hammering or the like, it is possible to detect internal defects or to detect foreign matter entering a function such as piping.

In this case, conventionally, the AE cuff was fixed to the subject with a couplant such as silico/grease interposed therebetween, and the subject was separately excited with a hammer. Because of this, it takes time to prepare.
Problems such as it being difficult to set up in any location and the need for manpower were common.

[Purpose of the invention]

An object of the present invention is to provide a detector that can easily detect internal defects and foreign objects by integrating a hammer that excites a subject and an AE sensor.

[Summary of the invention]

In the present invention, by integrating the object excitation hammer and the AE sensor, it is possible to set the object to any desired position with one hand and in a short time.

[Embodiments of the invention]

FIG. 1 shows an embodiment of this device.

In this figure, 2 is a glove with a built-in sensor and a hammer, and the case 2 has a built-in power supply for driving the hammer.

In addition to the above-mentioned power supply, the case is equipped with a switch 3, a knob 4 for adjusting the force of the hammer, a glove telescopic arm 5, and the like.

The structure of the glove is the 211th! Shown in J.

In this figure, 11 is a handle ff, and 12.13 is a spring and solenoid that drive the knob.

The force attracted by the solenoid is struck by the spring against the subject 14, thereby exciting the subject. The signal is received by a cell 15 having a membrane 161 with a couplant reservoir at its tip.

17 is a cushion material.

The signal is processed by the detection device and the waveform? By monitoring, it is possible to detect foreign objects, and by monitoring the frequency band, it is possible to detect internal defects (before abnormalities occur).

FIG. 3 shows the electrical structure of this senna.

Reference numeral 21 designates a driving power source, 22 a solenoid, 23 a switch, 24 a resistance for adjusting strength, and 25 a switch 77 circuit for continuous hanomarinog. If you want to hit it one-on-one, you can do it by pressing the hand switch 23.

In the present invention, the AE/S is used for the C/S, but all the 7/S, such as the CO/D/S microphones, can be used for the target frequency Vr.

Furthermore, instead of having a built-in power supply for driving the hammer, it is also possible to prepare it separately and convert it into a quantity, or to drive it with air or the like instead of the power supply.

〔Effect of the invention〕

According to the present invention, since the hammer and the handler are integrated,
This has the effect of making it possible to inspect even narrow areas easily and in a short time.

[Brief explanation of the drawing]

FIG. 1 shows an overall view of an example of this device, FIG. 2 shows a structural diagram of a glove portion, and FIG. 3 shows an electric circuit diagram of the device. 1... Glove, 2 River case, 6... Cable, l
l...Hammer, 13...Solenoid, 15...A
Continuation of page 1 0 Inventors 1) Tetsuo Kuchi 3-chome Saiwaimachi, Hitachi City

Claims (1)

[Claims] 1. Built-in hammer A characterized by the ability to easily detect internal defects and foreign objects by integrating the hammer that excites the object and the AE chamber 1 and making it possible to hold it in hand.
B-Seph.