The Literary Life of a Science Leader

Chapter 47 Teaching Assistant, Fracture Mechanics

Mu Jingchi naturally doesn't know all kinds of things in Professor Yang's mind.

He naturally has his own ideas for setting such a big topic. For him, there is a system that can learn future material knowledge, so he must make good use of this knowledge to contribute to himself, the country, and the society. contribute.

Maybe there are difficulties, maybe a certain project will be stuck for several years, but Mu Jingchi is not afraid.

"By the way, there is one more thing. The School of Materials asks you if you have any thoughts on taking up a position."

Professor Yang Wenwu brought the topic to the other side, and Mu Jingchi's subject did not continue to flip through. He planned to set aside enough time to read it seriously, not now.

"Me? I'm not capable enough!"

The first thing Mu Jingchi thinks about is his ability. Scientific research ability is one thing, but being a teacher is another.The former is a question of intellectual practice, the latter a question of education.

A good learner, researcher, is not necessarily a good educator.Although judging from the three material papers, Mu Jingchi's knowledge system is deep enough, and he has the strength to spread knowledge.

"You can consider starting as a teaching assistant first, and after you get used to the teaching mode, you can be promoted to a lecturer."

Yang Wenwu obviously has a tendency toward Mu Jingchi, and hopes that he will stay in the school, "And this will not affect your scientific research projects. Sometimes simply lecturing to spread knowledge can provide you with inspiration, and it can also be used as a place to relax. Way."

Mu Jingchi agrees with Professor Yang's point of view, but he has a better choice!
The study covered by the super happy family house system can provide inspiration, while the living room and bedroom are better choices for him to relax.

be a teacher?

Perhaps everyone has the characteristic of being a good teacher, because this is the act of putting one's own thoughts into other people's heads.

Moreover, if he is the only one who wants to change the country's material issues, the pressure will be too great.If you spread the future knowledge you have through education, you can cultivate more material talents.

Even if there is no way to help Mu Jingchi in the general direction, at least he has more helpers who can keep up with his material ideas.

Mu Jingchi was a little moved.

"However, Professor."

Mu Jingchi also has his own worries, "I still want to engage in composite materials in the future, mainly for national defense and military. If I work in Huaqing University, then it will be difficult to get into the National Defense Military Industry Research Institute?"

There is another meaning to this statement. After all, Huaqing University is a university. Compared with the National Defense Military Industry Research Institute, the nature of secrecy is different after all.

"I thought what were you worried about?"

Yang Wenwu waved his hand, not taking Mu Jingchi's worries to heart, "I know what you think, but you don't have to worry at all, if you can make a breakthrough, the National Defense Military Industry Research Institute is not a problem at all, and you will know in the future. "

Mu Jingchi was skeptical, but he still chose to trust Professor Yang.

After all, this is a matter for the future. If it doesn't work, there are other ways, such as resigning from Huaqing University and entering the National Defense Military Industry Research Institute!

"If this is the case, then I will stay in school and start as a teaching assistant."

Yang Wenwu took out an application form and handed it to Mu Jingchi, "You fill out this form, and fill in the courses you want to choose here."

Mu Jingchi filled it out one by one according to Professor Yang Wenwu's guidance, and the course he chose was "Basics of Materials Science".

"Basics of Materials Science" is divided into two parts at Huaqing University. Students complete it in two semesters, and the teacher is Professor Tian Botian.From now on, Mu Jingchi will be Professor Tian's teaching assistant.

"The process still needs to go for a few days, and then I will take you to meet Professor Tian."

Mu Jingchi nodded.

···
It was already an hour after I left Professor Yang's office.

Yang Wenwu and Mu Jingchi also discussed some issues about material knowledge, which was an investigation of Mu Jingchi's homework, to see if he had relaxed his requirements during the winter vacation.

"You scratch your head, what's the matter?"

Zhang Chuyang's desk was not far from Mu Jingchi, and he saw a very distressed Zhang Chuyang at a glance.With the addition of a good mood, Mu Jingchi walked over to express his concern, "The project is not going well?"

You don't need to look up to know who the speaker is, and Zhang Chuyang has indeed done so. His eyes are still fixed on the information in front of him.

There are many notes on the information, including translations of English words, some underlined points, and some traces of calculations. It seems that Zhang Chuyang is very careful.

"It's not about the project," Zhang Chuyang shook his head, "Chizi, how about your fracture mechanics?"

With the development of production, the use of new materials, the complexity of load conditions and working conditions, etc., new and higher requirements are constantly put forward for the design of materials, which also challenges the traditional strength theory.

For example, many materials need to be under loads that change alternately with time, or work in high temperature environments for a long time. In these cases, when calculating the strength, stiffness and stability of materials, more influences must be considered factor.

Another example is the development of aerospace and aviation, and composite materials have emerged.

In order to solve these new problems, composite mechanics and fracture mechanics were developed.

"not so good."

Mu Jingchi shook his head, expressing that he was helpless.

Fracture mechanics is a new branch of solid mechanics that studies the strength and life of cracked components, and is the theoretical basis for structural damage tolerance design.

It is divided into two categories: linear elastic fracture mechanics and elastic-plastic fracture mechanics. The former is suitable for small-scale yielding near the crack tip; while the latter is suitable for large-scale yielding near the crack tip.

Generally, it is necessary to obtain the fracture toughness of various materials and determine whether the object will fracture under the action of a given external force, that is, to establish the fracture criterion.Study the crack propagation law during load action; study the fracture problem of objects under the simultaneous action of corrosive environment and stress.

It has been widely used in engineering fields such as aviation, aerospace, transportation, chemical industry, machinery, materials, and energy.

Zhang Chuyang's research project is the failure analysis of mechanical parts, and it is a relatively in-depth theoretical research direction, and he must be proficient in fracture mechanics.

However, the development of fracture mechanics in our country is a bit late.

Mu Jingchi is not as good as Zhang Chuyang in fracture mechanics, and the "Basic Materials Science (50 Edition)" from 2069 years later has no relevant knowledge about fracture mechanics.

"so hard!"

Zhang Chuyang lamented that although he said that there would be no easy direction in the study of materials science, he still found fracture mechanics difficult.

Mechanics, there is no simple!

"It's hard for me too!"

Mu Jingchi seemed to be influenced by Zhang Chuyang. He sighed when he thought of the related topics he would do in the future.

After all, what he has received now is only "Fundamentals of Materials Science (2069 Edition)", which is really a drop in the ocean compared to the entire material knowledge system.

(End of this chapter)