When did China start to engage in non-destructive testing?

The Eastern Han Dynasty Shun Di Yang Jia no years (132 years AD), Tai Shi Ling Zhang Heng (Henan Nanyang Xie'e people, 78-139 years AD) invented the "Waiting for the wind geodesic instrument" the world's earliest seismograph. The Book of the Later Han Dynasty: "...... tasted a dragon machine hair, and the ground does not feel moved, the scholars of the capital city, the scholars blame it for the absence of signs, after a few days of the post to the fruit of the earthquake in Longxi, so they all served." This is China's earliest nondestructive testing with instruments.

Ray detection: China's medical X-ray room has been the latest in 1915 in Jinan, Shandong Province appeared, because founded in 1903 in Jinan **** Hop Medical Road School (The Union Medical College at Tsinafu, that is, one of the predecessors of Qilu University) "1915, the completion of the new ward building, with In 1915, the new ward building was completed, with 10 general wards and several isolation wards, 115 beds, divided into internal medicine, surgery, gynecology, pediatrics, ophthalmology, otorhinolaryngology, floriculture, dentistry, etc., as well as an X-ray room, a testing room, an operating room, and a dispensing room, etc.". "It was the first in the province to establish an X-ray room and was equipped with the only machine in the province at the time for exposed X-ray tubes."

An X-ray machine on display at the former residence of Soong Ching Ling in Beijing is labeled "Donated by Singaporean Chinese in 1939, General Stilwell ordered the U.S. Army to transport it by air

to Yan'an." The machine consists of a high-voltage transformer/manipulator and X-ray tube/display fluorescent screen support frame composed of two major parts, the peak voltage of 90kV, tube current of 5, 10, 30mA three grades, is the United States of America, Chicago's H GFischer & Co products.

Magnetic particle detection: March 24, 1939, the former British Singapore Morris senior technician of Hainan Chinese Wang Wensong arrived in Kunming (for the

2 batch of return to China to participate in the war of resistance against Japan of the Nanyang overseas Chinese mechanics mechanics of the mechanic leader), the first for the introduction of China's magnetic particle detection technology (brought back the magnetic particle detector and detection technology)

Leakage Detection: the literature, Ma Minggang claimed that "the magnetic particle detectors and testing technology". In the literature Ma Minggang claimed that "before 1949 ...... already used kerosene leakage detection ......" the details are not known, to be checked.

Ultrasonic testing "1952, the Academy of Railway Sciences imitation of the Soviet Union ultrasonic flaw detector success" (see China's ultrasonic flaw detector father, the former Jiangnan Shipyard radar engineers Zong Lide in the 1966 National Instrumentation Exhibition in the exchange of non-detectable flaws on the symposium of the General Assembly report on "the development of China's ultrasonic flaw detector history"). (In September 2010, the National Society for Non-Destructive Testing, Mr. Wang Wutong replied to the author's questions to confirm that the developer is Sun Dayu, imitation УЗД-12-type instrument). "1954 Changchun Institute of Mechanical and Electrical Research, Chinese Academy of Sciences imitation plus

Nada instrument success" 3) "1953 Jiangnan Shipyard began to develop ultrasonic flaw detector, self-designed circuitry, while firing barium titanate piezoelectric ceramics, was successful in 1955, the production of Jiangnan! -Ⅰ, -ⅠB, -ⅠC, -Ⅱ, -Ⅲ each type of ultrasonic flaw detector more than 3700 units, to meet the domestic demand at that time".

Electromagnetic eddy current detection: Yue Yunbin, engineer of Nanjing Jincheng Machinery Factory, developed two types of eddy current conductivity meters during 1962-1964, which were used for mixing and sorting of incoming non-ferrous metals and iron and steel materials respectively, and were exhibited and introduced at the 66-60 meeting.