Hearing Fitz say that the video was faked, Luo Xiu raised his head curiously.

I saw that the video on the screen stopped at the last collision between Luo Xiu and Iron Man, and Luo Xiu stabbed half of the road sign post into Iron Man's shoulder.

"Why do you say that?"

Luo Xiu asked with a smile.

As a party, he certainly knew that the video was not faked.

I only heard Fitz's words rejoice, pointing to the video and saying: "Look, the weapon in the robot's hand is a road sign, just now Iron Man used a miniature missile to blow up the road sign, and now the robot only has half of the road sign post left in his hand." ”

"That's right." Luo Xiu nodded.

At this time, Fitz began to popularize science: "Most of the road signs in the United States are composed of two parts—signs made of magnesium aluminum alloy, and columns made of carbon structural steel that support the signs. Judging from the deformation effect that occurred when the missile hit the column just now, the column in the robot's hand is indeed made of carbon structural steel, and judging from its performance, the quality of the carbon steel used in the column is not complimentary. ”

Luo Xiu listened carefully, and Fitz's analysis had no problem so far.

At this time, Fitz pointed his finger at the Iron Man suit and continued: "Next, let's look at the Iron Man suit, which is the latest Mark III., although I don't have the design drawings of the Mark III., but it is obvious that the material of this suit is extraordinary. Iron Man's opponent, the mechanical exoskeleton material of this robot should be titanium alloy, and the material of Mark III. is obviously a level higher than that of the robot, judging from its performance just now, I speculate that Mark III.'s material should be gold titanium alloy. ”

Fitz's few simple words are very skillful, and it can be seen that his knowledge and vision have reached a very high level.

As someone who has seen the design drawings of the Mark III suit, Luo Xiu certainly knows that the material of Iron Man's suit is gold and titanium alloy, that is, a precious alloy made of 99% gold and 1% titanium - although this alloy is far less than Edelman alloy or vibranium, it is more than enough to deal with most of Iron Man's enemies in this world.

And Fitz was able to deduce the material of the Iron Man suit just from the video, which shows that he is a smart person.

"You're right, I think so." Luo Xiu agreed.

With Luo Xiu's approval, Fitz analyzed more vigorously: "In this way, the flaw in this video appears, Iron Man hits the robot at a speed of Mach 1, and the robot just lifts half of the road sign column to use the reaction force to stab Iron Man, but even in the case of extremely high impulse, ordinary carbon structural steel - especially the carbon structural steel of the high quality - is far from enough to penetrate the gold and titanium alloy of the Mark III suit." In other words, under normal circumstances, after Iron Man collides with the robot, the column will only damage itself, and will not be able to pierce Mark III.'s shoulder. ”

Hearing this, Luo Xiu nodded.

Fitz's analysis does make sense, and it is indeed untenable for carbon structural steel to pierce gold-titanium alloys.

But as a party to the incident, Luo Xiu understood the mystery, and he moved his lips, ready to explain.

But Fitz didn't give him a chance to speak, adding: "Even if you take into account the impact force generated by the contact surface and the local pressure, repair, you should understand that even if the pressure is large enough, the first damage should be carbon structural steel, not gold and titanium alloy, so it is impossible for the robot's half-cut column to pierce into the Mark III.'s suit, this video must be fake......"

After listening to Fitz's statement quietly, Luo Xiu said in an orderly manner: "Fitz, I understand that it is not a problem of pressure, and the carbon structural steel is indeed not as good as Mark III.'s gold-titanium alloy, but there is no problem with this video, and the half of the sign column can also be pierced into Iron Man's shoulder." ”

"Huh?" Fitz didn't expect that he couldn't convince Luo Xiu after spending a long time talking, and looked at him quite unconvinced, "What did you say?" ”

Luo Xiu smiled, and then gave his own explanation.

"It's because of cavitation."

"Cavitation?" Hearing this word, Fitz's eyes widened in surprise, and he was waiting for Luo Xiu's further explanation.

Cavitation is of course known to Fitz – the corrosion and damage caused by the high-speed movement and pressure changes of the fluid in contact with the metal is a phenomenon that is common in all kinds of metal materials, even Mark III.'s gold-titanium alloys.

But Rothew said that Mark III. was pierced by carbon structural steel because of cavitation, which is a bit bizarre.

At this time, Luo Xiu pointed to Iron Man's shoulder: "Fitz, I think you must have noticed Mark III.'s secret weapon, the mini six-barreled cannon hidden under the shoulder armor, right?" ”

Fitz nodded: "Yes, it's a pity that Iron Man didn't test this guy's firepower in this hand-to-hand combat." ”

"The Mini Six-Barreled Cannon, while a good design and can be used as a surprise, is filled with liquid explosives, which creates a fluid environment inside Mark III.'s Warframe." Luo Xiu unraveled the mystery of the problem.

"Oh......"

Hearing this, Fitz suddenly realized.

This creates a fluid that comes into contact with the metal and also provides an environment for cavitation.

At this time, Luo Xiu continued: "Although the internal materials of the Mark III armor can effectively prevent the phenomenon of cavitation, at most it can only control cavitation, and cannot completely cure this situation. In addition, a large number of bubbles are produced by the decrease of the pressure of liquid explosives during the operation, and when the bubbles are in contact with the side walls near the side walls of the overflow parts, due to the asymmetry of the corner boundaries of the upper and lower walls of the bubbles, the collapse speed of the upper and lower walls of the bubbles is different when they collapse. The bubble wall away from the wall bursts earlier, while the bubble wall closest to the surface of the material breaks a little later, creating a microjet towards the wall. This micro-jet delivers a directional impact on the surface of the material in a fraction of the time, damaging even the Mark III. armor......"

At this time, Fitz had already thoroughly understood: "So even carbon structural steel can directly pierce the Mark III. armor?" ”

Luo Xiu nodded and said, "That's the truth." ”

Fitz looked at Luo Xiu with a look of adoration, he didn't expect Luo Xiu to have such a deep knowledge in fluid mechanics, and his words revealed the fatal flaws in the Iron Man suit, which is of great significance.

"If Tony Stark hears this, he will be grateful to you, and maybe he will hire you to be his engineer with a high salary." Fitz said with a smile.

Luo Xiu pouted: "Fitz, I don't think Tony Stark will like me." ”

"No, he's going to like you, he's going to appreciate you." Fitz said firmly.

While speaking, Fitz continued to play the video, and after the robot pierced Iron Man, S.H.I.E.L.D. arrived, and at this time, the robot who was knocked to the ground by Iron Man shed the mechanical exoskeleton he was wearing.

And at this moment, Fitz suddenly saw the face under the mechanical exoskeleton......

"Oh! Oh, my God! ”

Now Leo Fitz was stunned!