engineering

Guan Qiao

Guan Qiao is a engineering topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand Guan Qiao rather than just read about it. In short: Guan Qiao (Chinese: 关桥; 2 July 1935 – 26 December 2022) was a Chinese engineer specializing in welding. He was an academician of the Chinese Academy of Engineering and formerly served as president of the China Welding Association and vice-president of the International Institute of Welding.

Key takeaways

Guan Qiao belongs to engineering; place it in that map before memorising details.
Learn the definition first, then one example that makes the definition concrete.
Connect Guan Qiao to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of Guan Qiao from memory before moving on to harder problems.

Reference excerpt

Guan Qiao (Chinese: 关桥; 2 July 1935 – 26 December 2022) was a Chinese engineer specializing in welding. He was an academician of the Chinese Academy of Engineering and formerly served as president of the China Welding Association and vice-president of the International Institute of Welding.

Name His first name, "Qiao" (桥; 'Bridge'), was given by his father, who hoped that Guan Qiao would grow up to be a bridge engineer to revitalize Chinese industry.

Biography Guan was born in Taiyuan, Shanxi, on July 2, 1935, while his ancestral home is in Xiangfen County. His father was an engineer in water conservancy and railway construction. His mother was a primary school teacher. After the Marco Polo Bridge Incident broke out in 1937, Shanxi was colonised by the Imperial Japanese Army, Guan fled to Shaanxi with his mother and lived in a cave in the mountains of Yichuan County. He secondary studied at Beijing Huiwen Middle School. After studying Russian for a year in Beijing Russian Specialized School, Guan was sent to the Soviet Union to study at the Bauman Moscow State Technical University in 1953. He joined the Chinese Communist Party in 1956. He returned to China in 1959 and had a brief assignment to the Ninth Research Institute of the Second Ministry of Machinery Industry as a welder. In 1959 he went back to his alma mater and obtained a K.T.H. degree in 1963. When he returned to China, he served as a senior engineer at the Beijing Aeronautical Manufacturing Technology Research Institute (BAMTRI) (now AVIC Manufacturing Technology Institute). He was president of the China Welding Association from 1990 to 1995 and vice-president of the International Institute of Welding from 1992 to 1995. Guan was a deputy to the 11th, 12th and 13th National Congress of the Chinese Communist Party. He was a delegate to the 6th National People's Congress and a member of the 9th and 10th National Committee of the Chinese People's Political Consultative Conference. Guan died in Beijing on 26 December 2022, at the age of 87.

Selected papers Q. Guan; R. H. Leggatt; K. W. Brown (1988). "LSND Welding of ThinWalled Structural Elements". The Welding Institute. Cambridge, United Kingdom. Q. Guan; Y. Cao (1993). "Verification of FE Program for Welding Thermal Strain-Stress Analysis Using High Temperature Moire Measurement". Welding in the World. 31. France: International Institute of Welding. Q. Guan; C. X. Zhang; D. L. Guo (1994). "Dynamic Control of Welding Distortion by Moving Spot Heat Sink". Welding in the World. 33. France: International Institute of Welding. Q. Guan (1994). "Low Stress No-Distortion Welding-A New Technique for Thin Materials". Welding in the World. 33. France: International Institute of Welding. Q. Guan (1999). "A Survey of Development in Welding Stress and Distortion Controlling in Aerospace Manufacturing Engineering in China". Welding in the World. 43. France: International Institute of Welding.

Honours and awards 1994 Member of the Chinese Academy of Engineering 1998 Science and Technology Progress Award of the Ho Leung Ho Lee Foundation 1999 Lifetime Achievement Award of the International Institute of Welding 2005 Lifetime Achievement Award of the China Welding Association 2005 Brooker Medal of The Welding Institute 2010 Order of Merit, 3rd class (Ukraine) 2017 IIW Fellow Award

References

Bibliography Yao Yuan (姚远); Liu Fanjun (刘凡君) (2011). 生命之光：记国际著名焊接专家、中国工程院院士关桥 [Light of Life: A Biography of Guan Qiao, A Well-known International Welding Expert and Academician of Chinese Academy of Engineering] (in Chinese). Beijing: Aviation Industry Press. ISBN 978-7030319470.

External links Guan Qiao on the Chinese Academy of Engineering (in Chinese)

Worked examples

Example 1 — a first encounter with Guan Qiao

Start with the simplest possible case. Write down what Guan Qiao claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In engineering, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to Guan Qiao before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about Guan Qiao ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of Guan Qiao

In research: Guan Qiao appears in engineering research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry: Engineering practice reuses Guan Qiao in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom: Guan Qiao is common in secondary-school and first-year university syllabi. It links to neighbouring topics 1935 births, 2022 deaths, 20th-century Chinese engineers, so understanding it makes those chapters shorter.
In everyday life: Look for Guan Qiao outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.

Ask Teacher Smith questions about this articleOpens your AI tutor with a question about “Guan Qiao” →

Affiliate

Preply — study more efficiently by working with a personal tutor. 50% off.

How to study Guan Qiao in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what Guan Qiao means in your own words.
Compare your version with the excerpt and mark what you missed.
Work through the three examples above with pen and paper.
Explain Guan Qiao out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Guan Qiao in simple terms?

Why does Guan Qiao matter?

Because it connects several engineering ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study Guan Qiao?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on Guan Qiao.