JPH01219538A - Test-piece cracking observing device - Google Patents

Abstract

PURPOSE:To easily confirm current test information as well as an observation image of a test-piece by providing an image processing means which projects test information from a test information output means on a monitoring television together with the video signal from an image pickup means one over the other. CONSTITUTION:The scan signal (c) of the surface of a test-piece S which is outputted by a detector 11 in a scan type microscope 10 is supplied to an image processor 38. The image processor 38 consisting of a CPU superposes the test information (b) on the number of times of loading and the load supplied from a testing machine controller 20 on the observation image of the test-piece S and outputs them on the monitor television 40. Consequently, the number P2 of times of loading, the load P3, a reference scale P4, etc., are displayed on the screen of the television 40 together with the observation image P1 of the cracking part of the test-piece S. The observation image and test information are therefore looked at simultaneously.

Description

DETAILED DESCRIPTION OF THE INVENTION A. Field of Industrial Application The present invention relates to a test piece crack observation device for observing the progress of cracks occurring during testing, such as fracture strength testing of materials.

B. Prior Art Conventionally, as this type of test specimen crack observation device, there is a device that uses a television camera to take an image of the surface of a specimen subjected to repeated loads and displays the image on a monitor television.

Furthermore, recently, an apparatus has been developed that uses a scanning electron microscope (SEM) to observe the progress of minute cracks in a test piece.

C0 Problems to be Solved by the Invention However, since the above-mentioned conventional device simply displays the surface image of the test piece on a monitor TV, information such as the number of load repetitions, load, amount of deformation, etc. at that time is not available. , cannot be determined without checking the display contents of other measuring instruments.

Therefore, when the user wants to check the test conditions while observing the monitor television, there is the inconvenience of having to look at a separate display for displaying the test conditions each time. Also,
Since the observation image and the test conditions are displayed separately, the observer cannot recognize them at the same time, and therefore there is a fundamental problem that the simultaneity of the observation image and the test information is not guaranteed.

Furthermore, when making a hard copy of the projected image, there is also the inconvenience of having to separately write the above-mentioned test information.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a test piece crack observation device that can easily recognize the test information at that time as well as the observation image of the test piece. There is.

Means for Solving the Problems The present invention has the following configuration in order to solve the above problems.

That is, the test piece crack observation apparatus according to the present invention includes an imaging means for imaging the surface condition of a test piece, a test information output means for outputting test information during imaging, and a video signal from the imaging means that outputs the test information. It is characterized by comprising an image processing means for superimposing the test information from the output means and displaying it on a monitor television.

E9 Effect According to the present invention, the test information at that time is displayed on the monitor television together with the observation image of the test piece.

F. Example Embodiments of the present invention will be described below based on the drawings.

FIG. 1 is a block diagram schematically showing the configuration of an embodiment of the present invention.

In the figure, the symbol S is a test piece. The test piece S is scanned using a scanning microscope (SEM) as an imaging means for imaging its surface condition.
It is set within 10. A load is repeatedly applied to the test piece S by a double-acting hydraulic actuator 12.

The load applied to the test piece S is detected by the load cell 14, and the detection signal is amplified by the load amplifier 16 and then converted to a digital signal by the A/D converter 18.
It is given to the test machine control B device 20 as a test information output means. The piston displacement of the hydraulic actuator 12 is detected by a displacement detector 22, and the detection signal is sent to a displacement amplifier 2.
After being amplified in step 4, the signal is converted into a digital signal by an A/D converter 26, and then provided to the test machine control device 20.

The testing machine control device 20 compares the load to be set on the test piece S with the load detected by the load cell 14, outputs a load signal a according to the deviation, and also outputs a load signal a according to the deviation, and also outputs a load signal a corresponding to the deviation. Based on this, test information such as applied load and number of times of loading is output. The load signal a outputted from the test machine control device 20 is converted into an analog signal by the D/A converter 28, and then amplified by the servo amplifier 30 and given to the servo valve 32.
2 is controlled so that a set load is applied to the test piece S.

A detector 11 within the scanning microscope IO detects secondary electrons irradiated from the test piece S. The scanning signal (video signal) C of the surface of the test piece S output from the detector 11 is amplified by the video amplifier 34, then converted to a digital signal by the A/D converter 36, and sent to the image processing device 38. given 0
The image processing device 38 superimposes test information such as the number of loads and applied load given from the test machine control device 20 on the observation image of the test piece S, and outputs the result to the monitor television 40. As shown in Fig. 2, the CPU 38
1. CRT controller 382. Data memory 3831
Image memory 384, character generator 385.
Video switch 386. It is composed of a D/A converter 387 and the like.

The main operations of the embodiment will be explained below.

The image signal (digital signal) C of the surface of the test piece S given to the image processing device 38 is stored in the image memory 384 under the control of the CPU 381.

On the other hand, test information such as the applied load and the number of times of loading applied from the test machine control bag ff20 is stored in the data memory 383.

The video signals stored in the image memory 382 are sequentially read out under the control of the CRT controller 382 and output via the video switch 386.

This video signal is converted into an analog signal by the D/A converter 387 and then output to the monitor television 40, whereby an observed image of the test piece S is displayed on the monitor television 40.

On the other hand, when the horizontal scanning of the monitor television 40 reaches a predetermined position, the video switch 386 is switched to the character generator 385 side by a control signal from the CRT controller 382. As a result, the test information stored in the data memory 383 is
A character pattern is extracted via a generator 385, and this character pattern is output to a monitor television 40 via a video switch 386 and a D/A converter 387.

As a result, as shown in FIG. 3, the screen of the monitor television 40 displays an observation image P1 of the crack portion of the test piece S.
Load count (CYCLE) display P2 and load load (LOAD)
) Display P3 and a reference scale 24 are also displayed.

In addition, in the above-mentioned embodiment, the case where test information is superimposed on an observation image obtained by a scanning electron microscope was explained as an example, but this is not a case in which test information is superimposed on an observation image obtained by a television camera. There may be.

Further, the test information is not limited to the number of loads, applied load, and reference scale, but arbitrary information such as the name of the test piece S may be superimposed on the observation image.

Effects of the G0 Invention As is clear from the above explanation, the test piece crack observation device according to the present invention superimposes the test information at that time on the observation image of the test piece and displays it on the monitor television, so that the observation You can view images and test information at the same time,
This is very convenient for test management. Further, even when making a hard copy of the observation image, the test information is also copied, which is advantageous because it saves the trouble of writing the test information anew.

[Brief explanation of the drawing]

1 to 3 are explanatory diagrams of a test piece crack observation device according to an embodiment of the present invention, in which FIG. 1 is a schematic block diagram thereof, FIG. 2 is a schematic block diagram of an image processing device, and FIG. The figure shows observation images and test information displayed on a monitor television. lO...Scanning electron microscope (imaging means) 20...Testing machine control device (test information output means) 38...Image processing device (image processing means) 40...Monitor TV Fig. 2 Fig. 3

Claims (1)

[Claims] (1) An imaging means for imaging the surface condition of a test piece, a test information output means for outputting test information being imaged, and a video signal from the imaging means that superimposes the test information from the test information output means. A specimen crack observation device characterized by comprising an image processing means for displaying images on a monitor television.