Automotive Black Technology Chapter 330: : The meaning of one trillion! (Leader adds -4)
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What is the significance of a fatigue life of one trillion times?
I won’t scare you if I say it, it means a lot!
Any metal has a fatigue life. For example, the most common piece of iron wire will break if you repeatedly bend it ten times. Then the fatigue life of this iron wire is 1x10.
However, the fatigue life of memory alloys such as nickel-titanium alloy is much higher. If such an expensive thing breaks after being used a few times, what is the manufacturing value of it?
So now medical devices made of the most durable nickel-titanium alloy are generally used, and their fatigue life can reach about tens of millions of times.
In other words, the high-quality memory metals currently available in the world can switch between the mother phase and the R phase about ten million times.
This level of service life can basically meet the usage conditions.
Why do you say basic?
For example, take the nickel-titanium alloy wire used for orthodontics, which is the most used field of nickel-titanium alloy in the medical field. Taking into account the growth process of children, the general service life is only a few years, and the teeth can be removed after orthodontics. .
However, some nickel-titanium alloy brackets similar to those used for cervical and lumbar bone correction may not be able to meet the demand even if their service life can reach ten or even twenty years.
This is obviously not enough for the average human lifespan.
This type of corrective device is surgically implanted into the human body. Once its service life is up, it must be surgically removed and replaced again.
If equipment is attached to human bones for a long time, it will cause varying degrees of deformation of bones or adhesion of tissues such as muscles. Therefore, the difficulty of replacement surgery and the harm to the patient are undoubtedly huge.
So from this point of view, even a fatigue life of tens of millions of times is not enough.
But what about a trillion times?
What is the concept of one trillion? Even if the frequency of use is 10,000 times a day, it can have a service life of up to 100 million days.
One! 100 million! sky!
3287671 months! 273972 years!
How long is the history of human civilization?
If the alloy piece in Li Fanyu's hand can be made into a bone fixator and implanted into a patient's body. This means that even if the patient lived from the time of cavemen to AD 3000, there would still be more than 90% of the lifespan of the bone fixator left!
One trillion is equivalent to eternity in a sense!
Li Fanyu looked at the inconspicuous little silver piece he was holding in his hand, wishing he could carve an inscription on it and stuff it into his body - this is the true sense of immortality, you damn!
Thinking of this, he quickly put the iron piece into his pocket like a treasure, picked up the lock and locked the materials laboratory, and returned directly to the company.
Zhengxin Laboratory.
The three top students looked at Li Fanyu, who was showing off, and all gave expressions of "this is stupid".
A trillion times?
Ha!
We don’t read enough books, so don’t lie to us.
Liu Qing twisted the alloy piece in Li Fanyu's hand with two fingers, put it to his mouth and blew on it. The originally flat alloy piece reached the deformation temperature and magically turned into a curved shape.
"Tsk...Brother Fan, there is a similar magic spoon on Taobao. Blend it with boiling water, leave it there for a while, and straighten it. You... except that the phase switching temperature is a little lower, say I really don’t see any difference from that one.”
Hearing what he said, Xu Fufang also touched his chin and curled his lips, "Well, I feel the same way. Brother Fan, are you being deceived? With a fatigue life of one trillion times, at present, I’m afraid it’s not up to the level of known technology. And let’s not talk about whether it’s reached or not. The key is what use does this thing have for us?”
Zhang Yu’s daily last-hitting, “correct solution.”
Li Fanyu felt like a basin of cold water had been poured on him, Wucao...yeah...what's the use...I seem to be making cars instead of medical equipment...
Sell it for money?
Nima can tell from the reaction of the three top students. If he goes to any hospital and says that this thing can be repeatedly metamorphosed a trillion times, he is afraid that he will be admitted directly to the psychiatric department!
He scratched his head, "What's the use... I'm born with talent... it will be useful?"
"Cut!!!"
The three top students all made contemptuous gestures and turned around to do whatever they were supposed to do.
Li Fanyu was left messy in the wind.
He put away the alloy pieces in a depressed manner. Damn it, it seems that he has been screwed by Xapp again. Nima Jing came up with these high-end but useless things, and deliberately made the young master angry to death!
At this time, Wang Rui, who had two big dark circles under his eyes, swayed over with a cup of hot water. He was so sleepy that he didn't see Li Fanyu in front of him, so the two of them bumped into each other.
Li Fanyu groaned and the alloy piece in his hand fell. By chance, it landed on the pool of hot water spilled on the ground.
The alloy sheet deforms rapidly when heated.
"Hey? Isn't this a memory alloy?"
Wang Rui picked up the small pieces on the ground. After leaving the heat source, the alloy pieces returned to normal in an instant.
He let out a light sigh and asked, "Brother Fan, where did you get this?"
Li Fanyu slapped his chest, "Our company produces it ourselves!"
With a pair of panda eyes, Wang Rui acted out an animal world version of contempt, "just bragging,"
Seeing Li Fanyu's face full of embarrassment, he played with the alloy piece in his hand and said as if to himself: "I have studied this thing, let alone believe it, it is the Academy of Aerospace Science, and it only makes teeth. Small applications such as correction wires and vascular stents with a stretch of less than 20% should not be available in China."
Uh-huh?
Is there anyone really knowledgeable? !
Li Fanyu immediately stepped forward and said, "Hey, isn't it awesome? Let me tell you, the fatigue life of this thing can reach one trillion times!"
"Hey...Brother Fan, you can't be arrogant. It turns out that you just love to show off. Why are you still in the habit of bragging? You didn't read that book "Automotive Black Technology", right? Don’t follow the example of that stupid tea author!”
Mist grass! When did I learn from him?
Li Fanyu instantly had the urge to explode the Japanese husky, and a mouthful of old blood was held in his throat.
Before he could get angry, Wang Rui continued to mutter: "It would be great if this toy could really have such a long fatigue life, whether it is placed on a car body or on an airplane, it is... Treasure."
Li Fanyu's eyes widened and he said seriously: "How do you say this?!"
"Take the aircraft wing as an example. The **** and aileron control surfaces of the current wing are connected by hinges. Although the hinge is easy to follow the shape, the hinge is not smooth, which leads to flow. The airflow passing through the wing separates prematurely and the aerodynamic efficiency is low. The larger the deflection angle of the control surface, the more obvious the performance decrease. If memory alloy wires can be used to replace the hinges to control the **** and ailerons, the airflow can be solved. The problem is to maintain the deflection angle of the control surface to the greatest extent. ”
Oh?
Although I don’t understand much, it looks awesome!
But...
Li Fanyu wondered: "Isn't there a memory alloy now? Why isn't it used on the wings?"
Wang Rui shrugged, "The durability is not good. After all, the aircraft flies in the sky, and the **** and ailerons are adjusted a lot. When the strength is required, it is difficult for the memory alloy to achieve tens of millions of times of fatigue. Life span. And the alloy wire is not like a hinge, and the degree of wear can be detected with the naked eye. If the alloy wire breaks in the sky, wouldn’t it be a big deal?”
Oh!
Li Fanyu secretly made a note and asked: "What about the car? In what ways can this thing be used?"
Wang Rui let out a long yawn and picked up the water glass on the ground, "The simplest one is the air intake grille."
Looking at Li Fanyu's puzzled look, he asked: "Didn't Mercedes-Benz release a concept car before, with an adjustable air intake grille on the front of the car?"
Li Fanyu nodded and said that he knew - it was specially designed for F1 racing.
"Why do you need to adjust the angle of the air intake grille? Don't you just want to keep the engine compartment at a certain temperature? When the car just starts, the air intake grille is closed, and the temperature in the cabin rises rapidly, allowing the engine to reach operating temperature as soon as possible. At high speeds, the air intake grille is fully opened to allow maximum heat dissipation from the engine. ”
"This device is said to have cost Mercedes-Benz more than 200 million U.S. dollars. It developed a separate system and implanted it into the ECU. It uses sensors to control the mechanical group to adjust the angle of the air intake grille. It would be much simpler if memory alloys were used. Directly use memory alloy to make the cabin cover and set a temperature. For example, if the engine temperature is lower than 200 degrees, the cabin cover will be in the female phase closed state. When the engine operating temperature is higher than 200 degrees, the cabin cover will turn into the R phase and automatically turn into the forward phase. Open the air vent to dissipate heat from the engine. Wouldn’t it be beautiful, practical, stylish and..."
Before he could finish his thoughts, he saw Li Fanyu turn around and run away.
This guy was holding the thermos cup that had fallen out of the pit, with two **** eyes, stretched out his hand and murmured: "Hey Brother Fan, why are you going?"
"I'm going to make the engine cover!!!" (To be continued.)