CN2223491Y

CN2223491Y - Press fit instrument for coating

Info

Publication number: CN2223491Y
Application number: CN 94243811
Authority: CN
Inventors: 易茂中; 胡奈赛; 何家文
Original assignee: Xian Jiaotong University
Current assignee: Xian Jiaotong University
Priority date: 1994-10-22
Filing date: 1994-10-22
Publication date: 1996-03-27
Anticipated expiration: 2004-10-22

Abstract

The utility model relates to a press fit instrument for coating, which is similar to a durometer. A top rod is added at the horizontal lower part of a lever; under the action of a speed reducer which is driven by a motor, the top rod can make loading and unloading movements continuously through screw pairs, etc. A displacement sensor is arranged on a rotating disk; a load transducer is arranged between an objective table and a lifting table; an acoustic emission probe is arranged on measured samples. Controlled by a control device, the displacement sensor, the load transducer and the acoustic emission probe can record load, press in depth (displacement) and transmit acoustic signals through an X/Y recorder, etc. The utility model is mainly used for coating and measuring bond strength of basal bodies in a pressing-in method.

Description

A kind of being coated with is laminated into instrument

The utility model relates to a kind of being coated with and is laminated into instrument, and it belongs to instrument field.

The bond strength that at present general plunging is measured the coating sample all adopts sclerometer, but sclerometer does not possess continuous loading, offloading functions, do not dispose control device, the acoustic emission device, load and compression distance (displacement) are measured and the record display device, therefore be difficult to determine coating cracking, peel off and ftracture, peel off pairing load, and can not obtain the relation curve of continuous load and compression distance (displacement), for example, record the relation curve of load and compression distance (or crack length of coating cracking), need carry out multi-point sampler with one or more fixing different sclerometer of load.

The purpose of this utility model is to avoid above-mentioned weak point of the prior art, be intended to provide a kind of novel being coated with and be laminated into instrument, control device, acoustic emission device and load, compression distance (displacement) with continuous loading, offloading functions and configure dedicated are measured and pen recorder, be used for solving in the big load range load continuously, problem that the relation curve of the dynamic monitoring of distortion, cracking and the disbonding of uninstall process tested sample and load and compression distance is measured.

The purpose of this utility model can reach by following measure.Its principle of work is similar to sclerometer, comprises loading, the feel trim actuator be made up of the parts such as lever, middle main shaft and main axle of penetrator of preparation weights, objective table and the parts such as rolling disc that have optical microscope.It is characterized in that loading, the lever level below in the feel trim actuator joins with vertical push rod top by coupling arrangement, the lower end of push rod joins by coupling arrangement and the screw rod that is fixed in the screw pair on the frame, spur gear in the screw pair matches with the spur gear that output terminal is joined that is positioned at the speed reduction unit under the frame, speed reduction unit links by shaft coupling and the direct current generator that is positioned on the base, is used to realize continuous loading and unloading; Be connected with the induction steel disc on the described main axle of penetrator, be connected with displacement transducer on the rolling disc; Between objective table and the hoistable platform load transducer is housed; The acoustic emission probe that joins with the acoustic emission device is housed on the tested sample on the objective table, above-described direct current generator, displacement transducer, load transducer, acoustic emission device join by bus and control device respectively, the output terminal of control device can join with the X/Y registering instrument, also can join with computing machine by the A/D conversion.

The purpose of this utility model can also reach by following measure:

Be that foregoing coupling arrangement can be pallet, also can be hinge means.

The drawing of accompanying drawing is described as follows:

Fig. 1 is coated with the synoptic diagram that is laminated into instrument

Fig. 2 is coated with the schematic diagram block diagram that is laminated into instrument

Fig. 3 is the schematic diagram block diagram of control device

Among the figure, 1 is weights, and 2 is lever, 3 is middle main shaft, and 4 is main axle of penetrator, and 5 is objective table, 6 is optical microscope, and 7 is rolling disc, and 8 is coupling arrangement, 9 is push rod, and 10 is frame, and 11 is screw rod, 12 is spur gear, and 13 is speed reduction unit, and 14 is speed reduction unit output terminal spur gear, 15 is base, and 16 is direct current generator, and 17 are the induction steel disc, 18 is displacement transducer, 19 is hoistable platform, and 20 is load transducer, and 21 is tested sample, 22 are the acoustic emission device, 23 are the acoustic emission probe, and 24,25,26,27 are respectively connecting bus, and 28 is control device.

Among Fig. 2,29 is the X/Y registering instrument, and 30 are the A/D conversion, and 31 is computing machine, and 32 is continuous loading and unloading unit, and 33 for printing, and 34 is plotting apparatus.

Among Fig. 3,35 are the preposition amplification of displacement, and 36 are the main amplification of displacement, 37 is displacement digital display, and 38 are displacement output, and 39 is the preposition amplification of load, 40 for the load master amplifies, and 41 is the load digital display, and 42 are load output, 43 is the load setting, 44 is Electric Machine Control, and 45 is motor power, and 46 is the threshold setting, 47 is signal Processing, and 48 are acoustic emission output.

Fig. 1 is the utility model optimum implementation

This is pressed into instrument in being pressed into test process, sample 21 is placed on the objective table 5, acoustic emission probe 23 closes by the butter lotus root and is placed on the sample, adjust the position of hoistable platform 19, sample is contacted with the pressure head of main axle of penetrator 4 lower ends, displacement transducer 18 indicating value return-to-zero, load transducer 20 indicating values are reset to zero also, begin then to load, load varies continuously to certain load from zero, compression distance (displacement) is also corresponding to vary continuously to certain value from zero, uses load and displacement sensor magnitude of load and compression distance respectively, shows and X/Y registering instrument 29 or computing machine 31 records by control device 28.

In being pressed into test process, increase along with adding load, tested sample distortion, cracking and disbonding, carry out dynamic monitoring and determine corresponding load by pop one's head in 22 pairs of tested sample distortion of 23 harmony emitters, cracking and disbonding situation of acoustic emission, acoustic emission signal by X/Y registering instrument or computer recording correspondence, in addition after acoustic emission signal intensity reaches the value of setting, by control device monitoring load or unload process.

Continuous loading of the present utility model, unloading realize as follows, rotatablely moving of direct current generator 16, spur gear 14 by the configuration of speed reduction unit 13 and output terminal thereof passes to the spur gear 12 in the screw pair, to rotatablely move by screw pair and to become pumping of screw rod 11 and push rod 9, by lever 2 push rod is moved up and down and to realize continuous loading, unloading and maintenance load, regulating direct current generator by control device 28 just changes, reverses, does not change and velocity of rotation, realizes loading, unloads, keeps load and loading and unloading speed to regulate.

The new control device of this practicality is custom-designed, its theory diagram as shown in Figure 3, wherein the preposition amplification 35 of displacement in displacement commentaries on classics sensor and the control device is joined, the main amplification 36 of preposition amplification of displacement and displacement is joined, main amplification of displacement and displacement digital display 37 and displacement output 38 are joined, the preposition amplification 39 of load in load transducer and the control device is joined, and preposition amplification of load and load master amplify 40 joins, and load master's amplification is provided with 43 with load digital display 41, load output 42 and load and joins; Load setting and Electric Machine Control 44 are joined, and Electric Machine Control and motor power 45 join, and motor power and direct current generator join.Direct current generator makes the utility model realize loading continuously, unload and keep load by Electric Machine Control; Threshold in acoustic emission device and the control device is provided with 46 and joins, and threshold setting and Electric Machine Control are joined, and also joins with signal Processing 47 simultaneously, and signal Processing and acoustic emission output 48 are joined, and the record acoustic emission signal.

The utility model is mainly used in the plunging test of coating and substrate combinating strength, the hardness that also can be used for coating and integral material, elastic modulus, creep, the plunging test of performances such as strain hardening rate is expected to obtain widespread use in departments such as physical and chemical inspection, coating production and scientific researches.

Claims

1. one kind is coated with and is laminated into instrument, it is similar to sclerometer, comprise lever (2) by configuration weights (1), the loading that middle main shaft (3) and main axle of penetrator parts such as (4) are formed, feel trim actuator, objective table (5) and have the rolling disc parts such as (7) of optical microscope (6), it is characterized in that described loading, lever level in feel trim actuator below joins with vertical push rod (9) top by coupling arrangement (8), the lower end of push rod joins by coupling arrangement and the screw rod (11) that is fixed in the screw pair on the frame (10), spur gear in the screw pair (12) matches with the spur gear that output terminal disposed (14) that is positioned at the speed reduction unit (13) under the frame, speed reduction unit joins by shaft coupling and the direct current generator (16) that is positioned on the base (15), is used for continuous loading and unloading; Be connected with induction steel disc (17) on the described main axle of penetrator, be connected with displacement transducer (18) on the rolling disc; Load transducer (20) is housed between described objective table and the hoistable platform (19); The acoustic emission probe (23) that joins with acoustic emission device (22) is housed on the tested sample on the objective table (21); Described direct current generator (16), displacement transducer (18), load transducer (20), acoustic emission device (22) join by bus (24,25,26,27) and control device (28) respectively, the output terminal of control device can join with X/Y registering instrument (29), also can change (30) by A/D and join with computing machine (31).

2. be laminated into instrument according to described being coated with of claim 1, it is characterized in that described coupling arrangement can be pallet, also can be hinge means.