Chapter 879 Wrong Direction

The symposium was only to gather the project team and clarify the direction of the next task.

Therefore, it did not last too long.

The remaining task is research and development.

However, in order to transform the theory, which is still imperfect, into practice, there is still a lot of work to be done.

It is completely different from writing a paper.

This is why Chang Haonan must mobilize people from so many units to support-

The high-power picosecond laser is ready-made by Haojing Optoelectronics, but if the entire laser processing equipment is compared to a machine tool, then the laser is only equivalent to the blade on the machine tool.

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

There are specialties in every profession, and many of the contents involved here are not touched by Chang Haonan.

Therefore, similar to the design of the turbofan 10, after the symposium, the entire project team was divided into three different directions.

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

Even if mechanical processing has been a formal discipline, it has at least gone through two centuries of development. In this process, the accumulated production data is vast, so empiricism can play a very huge role in it.

However, laser processing obviously cannot wait for two centuries.

Not even twenty years.

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

In order to put it into production in a short time, it is necessary to be able to reverse, at least partially reverse 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 hardware level of the entire laser processing equipment and provides necessary experimental data support for the first direction.

The Gaojing 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 made an additional requirement, that is, not only the laser source itself, but also the parts related to the processing characteristics of the machine tool should be all domestically produced.

On the contrary, for motors and lens groups, if the progress is really too late, the requirements can be appropriately relaxed.

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

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

Otherwise, he will work hard, but when others check, they will find that you have bought a bunch of local volume holographic gratings that match the pulse laser.

That would be pure fun...

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

Because this is not strictly speaking "a" direction.

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

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

As instructions and documents were signed by Chang Haonan, the newly-formed R&D team gradually began to operate.

Although these members from different systems cannot cooperate as seamlessly as the WS-10 project team for the time being, it is not a bad thing to start running-in in advance.

Race against time!

...

Just as Chang Haonan was preparing to start the project.

Oxfordshire, southern England, UK.

Rutherford Appleton Laboratory.

Professor Martin Bock was sitting around a semicircular conference table with several technical representatives from Oxford Lasers and Edinburgh Instruments.

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

What was displayed on the screen was the paper that Chang Haonan had just published not long ago, as well as some related experimental data.

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

James Campbell from Edinburgh Instruments spoke first:

"Matt, we have received reports from several research institutes and laboratories, all of which stated that they were able to reproduce the experimental results in Professor Chang's paper, but because the calculation process involved is relatively complicated, it is still difficult to promote the same method."

"So, the general concern in the industry is whether the transient thermoelastic model proposed by Professor Chang is universal, or can only achieve a good fit within a limited range?"

In fact, once Chang Haonan's article was published, it attracted a lot of attention and continuous doubts.

Although the doubts were not loud, they all came from industry insiders who were studying related fields.

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

At least it is not the level where you can get the results by simply substituting parameters.

So for the time being, everyone can only use the dozens of data mentioned in Chang Haonan's paper to repeat the experiment-

Other data cannot even be calculated, let alone any verification.

Of course, the spectators may not care, but for companies that hope to commercialize laser processing technology, the risks involved cannot be ignored.

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

Of course it doesn't mean data.

But a model.

"It's normal that most people can't understand it."

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 super computers, I have cracked the rules contained in it..."

He said, gesturing to the side.

Immediately afterwards, Turson switched the PPT on the curtain to the next page.

The above is half of the formula calculation, and an image drawn 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, can we really 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?"

Although 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 simulations, which have 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 an attempt to flood the market, 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 the insufficient level of computer hardware, and on the other hand, it is also the limitation of mathematical theory.

But the paper in front of 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 went to check it out. In addition to being the co-prover of the Poincaré conjecture, Professor Chang Haonan is also the developer of TORCH 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 business executive, his first concern is money.

“Because theory is theory, it’s not that 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 machining, 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 composites to metal, the situation may improve a little, but not too much."

Having said this, he once again motioned for Turson to turn the page:

This time it's a somewhat dizzying 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 originally wanted to sell 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 considered 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 field of semiconductor processing to improve the equipment. If we have the funds and manpower If it’s sufficient, we should be able to see some results soon.”

Looking at Professor Bock who was full of confidence, Linton and Campbell looked at each other and read the meaning of "you can give it a try" from each other's eyes.

"So, Professor Burke."

The Oxford Laser Company dominated the partnership, so Thomas Linton stood up and came to Bock as the final word:

"We will provide you with the maximum support within 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…”