Method and device for measuring weak bonding strength of coating interface
A technology that combines strength and measurement methods. It is applied in the direction of measuring devices, mechanical devices, instruments, etc. It can solve the problems of quantitative measurement and other problems, and achieve the effect of easy layout, convenient loading and unloading, and small volume.
Inactive Publication Date: 2014-05-28
JIANGSU UNIV
View PDF6 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0003] At present, there are many methods for detecting the bonding strength of the coating interface (Zhang Yongkang, Kong Dejun, Feng Aixin, Lu Jinzhong, Ge Tao, Research on the detection of coating interface bonding strength (Ⅱ): Coating bonding interface stress detection system, Acta Physica Sinica, 2006, 55 (11): 6008-6009), such as scratch test method, laser spalling method, indentation test method, interface indentation method, etc., which are not suitable for coatings with weak bonding strength. The method is whether the transparent glue sticks off, this method cannot be quantitatively measured
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0019] Combine below figure 1 The device of the present invention will be described in detail.
[0020] The device for realizing the present invention comprises: comprising a laser 20, a beam splitter 21, a convex lens 22, a photodiode 24, an acoustic emission sensor 25, an oscilloscope 26, a signal line and a measuring object 10; 22. The angle between the beam splitter 21 and the output light path of the laser 20 is 45 degrees; a photodiode 24 is placed on the trigger light path reflected by the beam splitter 21, and the receiving port of the photodiode 24 is facing the beam splitter 21 and connected to the laser. 20. The output optical path is vertical, and the distance between the photodiode 24 and the beam splitter 21 is equal to the distance between the beam splitter 21 and the focal point 23 of the convex lens, and the photodiode 24 is connected to the oscilloscope 26 by a signal line; the distance between the acoustic emission sensor 25 and the focal point 23 of the con...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention discloses a method and a device for measuring weak bonding strength of a coating interface and relates to the technical field of laser detection, in particular to the method and the device for measuring weak bonding strength of the coating interface based on laser induced shock waves. An emitted laser beam is focused by a convex lens, air is ablated at the focal point of the convex lens to form the laser induced shock waves and the laser induced shock waves are spread towards a measuring object; after the interaction of the laser induced shock waves and the measuring object is completed, a circular area is formed, the diameter D of the circular area is measured and the distance L from the focal point of the convex lens to the boundary of the circular area is obtained in combination with a perpendicular distance l from the focal point of the convex lens to the plane of the measuring object; and the pressure of the laser induced shock waves is further obtained and the pressure p1 represents the weak bonding strength of the measuring object. The method and the device for measuring weak bonding strength of the coating interface realize the quantitative measurement of the weak bonding strength of the coating interface; and the device has a simple structure and small volume, can be very easily arranged around the measuring object and is convenient to assemble and disassemble.
Description
[0001] Field [0002] The invention relates to the technical field of laser detection, in particular to a method and device for measuring the weak bonding strength of a coating interface based on laser-induced shock waves. technical background [0003] At present, there are many methods for detecting the bonding strength of the coating interface (Zhang Yongkang, Kong Dejun, Feng Aixin, Lu Jinzhong, Ge Tao, Research on the detection of coating interface bonding strength (Ⅱ): Coating bonding interface stress detection system, Acta Physica Sinica, 2006, 55 (11): 6008-6009), such as scratch test method, laser spalling method, indentation test method, interface indentation method, etc., which are not suitable for coatings with weak bonding strength. The method is whether the transparent glue sticks off, this method cannot be quantitatively measured. For the weak bonding strength coating with only about one atmospheric pressure, it shows a large bonding strength in vacuum. A potent...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Patents(China)
IPC IPC(8): G01N19/04
Inventor 王飞张永康余天宇姚红兵张朝阳叶霞
Owner JIANGSU UNIV