-
摘要: 为了测量材料在高温甚至超高温下的力学性能，采用数字图像相关方法，并研究其在高温下的最优成像。采取不同的散斑制作方法，同时加入不同颜色的高温漆，在不同的温度节点，外加不同光源及相应的滤波片，采集并观察图像是否具有良好的对比度。普通的单色光源在800℃以后会逐渐失效，无法获取图像，而紫外光在1 200℃时依然可以获取较好的图像，且直接利用试件本身颜色作为底色效果更佳。采用紫外光照明可以实现DIC在高温环境下的测量。同时利用黑色或者蓝色散斑直接喷涂在试件上有着最佳的对比度，要优于常规的散斑制作方法。Abstract: In order to measure the mechanical properties of materials at high temperatures or even at ultra-high temperatures, digital image correlation methods are used and their optimal imaging at high temperatures is studied. Different speckle production methods are adopted and high temperature paints of different colors are added. At different temperature nodes, different light sources and corresponding filters are added to collect and observe whether the image has a good contrast. The ordinary monochromatic light source will gradually fail after 800℃, and the image cannot be obtained. The ultraviolet light can still obtain a better image at 1 200℃, and the color of the test piece itself is better as the background color. UV light illumination can be used to measure DIC in high temperature environment. At the same time, the use of black or blue speckle directly sprayed on the test piece has the best contrast, which is superior to the conventional speckle making method.
-
Key words:
- Digital image correlation /
- high temperature measurement /
- ultraviolet light /
- speckle
-
表 1 各颜色散斑耐温极限
Table 1. Temperature limit of each color speckle
颜色 厂家提供的耐温极限 黑色 1 204 ℃ 白色 1 148 ℃ 黄色 1 148 ℃ 蓝色 1 093 ℃ 绿色 1 000 ℃左右 
下载: 导出CSV
-
[1] PETERS W H, RANSON W F. Digital imaging techniques in experimental stress analysis[J]. Opt. Eng., 1982, 21(3):427-431. doi: 10.1117/12.7972925 [2] PETERS W H, RANSON W F, SUTTON A, et al.. Application of digital correlation methods to rigid body mechanics[J]. Opt. Eng., 1983, 22(6). http://ci.nii.ac.jp/naid/80001866469 [3] YAMAGUCHI I. Laser-speckle strain gauge[J]. J. Physics E:Scientific Instrument, 1981, 14(11):1270-1273. doi: 10.1088/0022-3735/14/11/012 [4] MAHAJAN A, PILCH A, CHU T. Intelligent image correlation using genetic algorithms for measuring surface deformations in the autonomous inspection of structures[C]//Proceedings of the 2000 American Control Conference, IEEE, 2000: 460-461. [5] ZHOU P, GOODSON K E. Subpixel displacement and deformation gradient measurement using digital image/speckle correlation(DISC)[J]. Optical Engineering, 2001, 40(8):1613-1620. doi: 10.1117/1.1387992 [6] 唐正宗, 梁晋, 肖振中, 等.用于三维变形测量的数字图像相关系统[J].光学精密工程, 2010, 19(10):2244-2253. http://d.old.wanfangdata.com.cn/Periodical/gxjmgc201010018TANG ZH Z, LIANG J, XIAO ZH ZH, et al.. Digital image correlation system for three-dimensional deformation measurement[J]. Opt. Precision Eng., 2010, 19(10):2244-2253.(in Chinese) http://d.old.wanfangdata.com.cn/Periodical/gxjmgc201010018 [7] 王永信, 卢秉恒, 梁晋, 等.数字散斑三维人体快速扫描方法[J].光学精密工程, 2016, 24(10s):551-558. http://www.wanfangdata.com.cn/details/detail.do?_type=perio&id=CN201510473678.6WANG Y X, LU B H, LIANG J, et al.. A rapid 3D scanning method for digital speckle[J]. Opt. Precision Eng., 2016, 24(10s):551-558.(in Chinese) http://www.wanfangdata.com.cn/details/detail.do?_type=perio&id=CN201510473678.6 [8] 王永红, 但西佐, 胡悦, 等.基于高速数字图像相关的人车碰撞伤害实验研究[J].光电子·激光, 2017(1):81-86. http://www.cnki.com.cn/Article/CJFDTOTAL-GDZJ201701013.htmWANG Y H, DAN X Z, HU Y, et al.. Car-pedestrian impact test based on high speed digital image correlation[J]. Journal of Optoelectronics·Laser, 2017(1):81-86.(in Chinese) http://www.cnki.com.cn/Article/CJFDTOTAL-GDZJ201701013.htm [9] 马永尚, 陈卫忠, 杨典森, 等.基于三维数字图像相关技术的脆性岩石破坏试验研究[J].岩土力学, 2017, 38(1):117-123. http://d.old.wanfangdata.com.cn/Periodical/ytlx201701015MANG Y S, CHEN W ZH, YANG D S, et al.. Experimental study of brittle rock failure based on three-dimensional digital image correlation technique[J]. Rock and Soil Mechanics, 2017, 38(1):117-123.(in Chinese) http://d.old.wanfangdata.com.cn/Periodical/ytlx201701015 [10] LI J, XIE X, YANG G, et al.. Whole-field thickness strain measurement using multiple camera digital image correlation system[J]. Optics and Lasers in Engineering, 2017, 90:19-25. doi: 10.1016/j.optlaseng.2016.09.012 [11] 王永红, 梁恒, 王硕, 等.数字散斑相关方法及应用进展[J].中国光学, 2013, 6(4):470-480. http://www.chineseoptics.net.cn/CN/abstract/abstract8999.shtmlWANG Y H, LIANG H, WANG S, et al.. Digital speckle correlation method and its application progress[J]. China Optics, 2013, 6(4):470-480.(in Chinese) http://www.chineseoptics.net.cn/CN/abstract/abstract8999.shtml [12] 徐忠营, 王伟, 孟松鹤, 等.数字图像相关技术在高温热膨胀系数测量中的应用[J].装备环境工程, 2016, 13(3):37-42. http://d.old.wanfangdata.com.cn/Periodical/jscxgy201603006XU ZH Y, WANG W, MENG S H, et al.. Application of digital image correlation technology in measurement of high temperature coefficient of thermal expansion[J]. Equipment Environmental Engineering, 2016, 13(3):37-42.(in Chinese) http://d.old.wanfangdata.com.cn/Periodical/jscxgy201603006 [13] 宝剑光, 秦强, 柴葳, 等.基于非接触法的1200℃高温应变测试技术研究[J].科学技术与工程, 2017, 17(6). http://d.old.wanfangdata.com.cn/Periodical/kxjsygc201706020BAO J G, QING Q, CHAI W, et al.. Research on high temperature strain testing technology based on non-contact method[J]. Science Technology and Engineering, 2017, 17(6). http://d.old.wanfangdata.com.cn/Periodical/kxjsygc201706020 [14] ZHANG H, WANG Y H, CHEN L, et al. High temperature deformation measurement based on ultraviolet DIC[J]. Proc. SPIE, 2015, 9302:93020A. http://www.wanfangdata.com.cn/details/detail.do?_type=perio&id=CC0215030858 [15] CHEN L, WANG Y H, DAN X Z, et al. Experimental research of digital image correlation system in high temperature test[J]. Proc. SPIE, 2016, 9903:990306. doi: 10.1117/12.2217703 -
下载:
图(13) / 表(1)
计量
- 文章访问数: 2269
- HTML全文浏览量: 855
- PDF下载量: 174
- 被引次数: 0
