The Military-industrial Scientific Research System of the Academic Master Chapter 879

Chapter 879 Wrong direction

The symposium is just to gather the project team and clarify the direction of the next task.

Hence it did not last long.

The remaining task is research and development.

However, there is still a lot of work that needs to be done to transform the theory, which is still imperfect at present, into practice.

It's not at the same level of workload as writing a thesis.

This is why Chang Haonan must send people from so many units to support—

High-power picosecond lasers are readily available from Haojing Optical Machinery, but if the entire laser processing equipment is compared to a machine tool, then the laser is only equivalent to the tool head on the machine tool.

A series of auxiliary equipment are also needed to control the accurate and efficient operation of this "light knife".

There are specialties in the art industry, and many of the contents involved are things that Chang Haonan has never been exposed to.

So, similar to when designing Turbofan 10, after the symposium, the entire project team was divided into three different directions.

The first direction is led by Chang Haonan himself, who is responsible for further improving the ablation threshold model.

Even though mechanical processing has been developed as a formal discipline, it has been developed for at least two centuries. During this process, a vast amount of production data has been accumulated, so empiricism can play a very huge role in it.

However, laser processing obviously cannot wait for two centuries.

Not even twenty years.

So, it is impossible to have enough experience for reference.

To put it into production in a short time, it is necessary to be able to reverse, at least partially, the entire process flow when the materials to be processed and the expected processing results are known.

The second direction is led by Academician Hou Xun, who is responsible for the research and development of the entire laser processing equipment hardware level, as well as providing necessary experimental data support for the first direction.

The Haojing Institute of Optics and Mechanics has been working on this field for many years and has accumulated a certain amount of technology.

However, Chang Haonan put forward an additional requirement, that is, not only the laser source itself, but also the parts related to the processing characteristics of the machine tool must be made in China.

On the other hand, for motors and lens groups, if the progress is indeed too late, the requirements can be relaxed appropriately.

Judging from the current international situation, China does not need to worry about being stuck in the short term.

The main thing is to cooperate with the bait thrown out before.

Otherwise, he would have been so fierce in his operations, but when others checked, they found that you had bought a bunch of local volume holographic gratings that matched the pulse laser.

That would be pure fun...

As for the third direction, there is no leader for the time being.

Because this is not strictly speaking "a" direction.

Rather, it is responsible for ensuring the various materials needed in the manufacturing and use of equipment, ranging from radioactive isotopes to cable and fiber optic lubricants.

Their progress will be reported to Lan Xinzhi of the Equipment Industry Department of the Science and Technology Commission, who will then coordinate with Chang Haonan...

As instructions and documents were signed out from Chang Haonan's pen, the newly formed R&D team gradually began to operate.

Although these members from different systems are not yet able to work together as seamlessly as the Turbofan 10 project team, it is not a bad thing to start running in early.

Race against time!

At the same time, Chang Haonan was preparing to launch the project.

UK, southern England, Oxfordshire.

Rutherford Appleton Laboratory.

Professor Martin Bock is sitting around a semicircular conference table with several corporate technical representatives from Oxford Laser Company and Edinburgh Instrument Company.

At this time, everyone's eyes were focused on a curtain on the wall of the conference room.

What is displayed on the curtain is the paper Chang Haonan published not long ago, as well as some related experimental data.

Professor Bock's student and assistant Emily Toulson stood behind the podium not far away, controlling the speed of the PPT playback, and occasionally making some necessary additions to the specific experimental situations.

James Cambert from Edinburgh Instruments spoke first:

"Matt, we have received reports from several research institutes and laboratories, all of which stated that they can reproduce the experimental results in Professor Chang's paper, but because the calculation process involved is more complicated, we have to do the same. The method still faces relatively big difficulties when it is popularized.”

“So, a common concern in the industry is whether the transient thermoelasticity model proposed by Professor Chang is universal, or can it only achieve good fitting within a limited range?”

In fact, once Chang Haonan's article was published, it aroused not only a huge amount of attention, but also a series of questions.

ˆAlthough the voices of doubt are not large, they all come from people in the industry who study related fields.

Because the model proposed by Chang Haonan is indeed a bit too complicated for most engineering scholars who lack theoretical mathematical foundation.

At least not to the extent that you can get the result simply by adding parameters. So that for the time being, everyone can only use the dozens of data mentioned in Chang Haonan's paper to conduct repeated experiments—

Other data cannot even be calculated, let alone verified.

Of course the people who eat melons can be indifferent, but for companies that hope to commercialize laser processing technology, the risks involved cannot be ignored.

So, two companies that already had a cooperative relationship approached Professor Bock and asked him to verify the authenticity of the paper.

Of course not referring to data.

But a model.

“It's normal that most people can't understand.”

Martin Bock showed a confident expression on his face:

“The calculation process in that paper is not very easy to understand even for ordinary scholars with a background in mathematics.”

“However, thanks to the assistance of supercomputers, I have deciphered the underlying rules..."

He said, gesturing to the side.

Following that, Turson switched the PPT on the screen to the next page.

The above is half of the formula calculation, and an image with dense curves and data points:

"Although we still don't know the specific derivation process of Professor Chang, we can be sure that within the energy, wavelength and time scale we usually study, the transient thermoelastic model he proposed can basically fit the experimental data. The largest error is only about 5%.”

“In other words, it is really possible to use mathematical means to calculate the thermal processing of molecules on the surface of materials, and the accuracy can meet the needs of industrial production?”

Even though he received a positive answer from Professor Bock, Cambert still had an expression of disbelief on his face.

Thomas Linton, the representative of the Oxford Laser Company who had been sitting next to him, did not speak, but he also frowned slightly.

As a high-tech enterprise, they have naturally heard of molecular dynamics simulation, which has been very popular in the past two years, and have even invested in many research groups doing related research.

But this kind of investment is a flood-watering attempt, which does not mean that they are really optimistic about this field.

In fact, most companies believe that it is unlikely to accurately apply numerical calculation methods to the field of microscopic particles, at least within 8-10 years.

On the one hand, it is due to the insufficient level of computer hardware, and on the other hand, it is also the limitation of mathematical theory.

But the paper before them and Professor Bock's conclusion clearly slapped them in the face.

Perhaps seeing the shock of the two business representatives, Bock paused for a while and then explained:

“I checked specifically and found that in addition to being the co-prover of the Poincaré conjecture, Professor Chang Haonan is also the developer of TORC Multiphysics, a very influential numerical calculation software in recent years.”

“So, it's not surprising that he can perform at a level far beyond ordinary people in this interdisciplinary field.”

"But…"

Linton hesitated for a moment, but continued:

“With such a guiding model, why not start commercializing it right away?”

As a corporate executive, his first concern is money.

“Because theory is theory, it is not easy to commercialize it.”

Bock replied:

"To truly achieve perfect continuous laser processing, the requirements for processing equipment and control systems are very demanding. The laser source needs to have five degrees of spatial freedom. In addition to laser power and beam quality, at least 7-8 parameters need to be controlled simultaneously. indivual."

“This is an extremely complex system even in the field of mechanical processing, not to mention maintaining the stability of the optical path itself while controlling it. The difficulty is almost equivalent to using photolithography to produce semiconductors.”

This analogy finally gave Linton and Campbell a somewhat intuitive concept.

“I speculate that if the processing object is changed from anisotropic carbon fiber composite to metal, the situation may improve a little, but not too much.”

At this point, he once again motioned for Tulson to turn the page:

This time it is a somewhat dazzling table.

“Look, you two, the red data in this table was written in that paper for fitting, while the blue data was fitted after I generalized the calculations.”

The former wanted to put it off, but seeing that the two representatives seemed uninterested, he had to give up the idea and explained directly:

"It can be seen that the parameters used for fitting in the paper are not very complex, and there is almost no rule in selecting points. This shows that even in the laboratory, they do not have the ability to control the laser source for high-complexity precision processing. capabilities, let alone the industrialization stage.”

This explanation is quite reasonable and well-founded.

"So...since the Chinese can't do it, can we do it at our level..."

Professor Bock had been waiting for this question for a long time, so he only heard half of it before expressing his position:

“It can be done in the laboratory.”

He pointed at the curtain in front of him:

"The complexity of the blue data in the table is close to the needs of actual industrial production, but the success rate is not yet stable. However, we are currently trying to use technology in the semiconductor processing field to improve the equipment. If we have the funds and manpower If enough, we should be able to see some results soon.”

Looking at the confident Professor Bock, Linton and Campbell looked at each other, and they both read the meaning of "you can give it a try" from each other's eyes.

“So, Professor Bock.”

The Oxford Laser Company took the lead in the collaboration, so Thomas Linton stood up as the final word and came to Bock's side:

“We will provide you with maximum support within the scope of our authority and wish you success as soon as possible!”

Martin Bock smiled and stood up to shake Linton's hand:

“It should be, I wish us success as soon as possible...”

(End of this chapter)

Chapter end

Report