"For materials with obvious yield phenomenon, the yield strength is the stress (yield value) at the yield point; for materials with no obvious yield phenomenon, the limit deviation from the linear relationship of stress-strain reaches the specified value (usually 0.2% of the original gauge length ) when the stress."
"···"
Alicia felt that her consciousness was beginning to blur, and it was difficult for her to distinguish whether it was a dream or reality?
"When the stress reaches point B, the plastic strain increases sharply, and the stress and strain fluctuate slightly. This phenomenon is called yielding. The maximum and minimum stress at this stage are called the upper yield point and the lower yield point respectively. Due to the lower yield point The value is relatively stable, so it is used as an indicator of material resistance, called the yield point or yield strength (ReL or Rp0.2)."
"···"
She felt her body trembling, and her soul seemed to leave her body, travel into the universe, and touch those huge stars.
"Usually used as an evaluation indicator for the mechanical and mechanical properties of solid materials, it is the actual use limit of the material. Because the necking occurs after the stress exceeds the yield limit of the material, the strain increases, the material is destroyed, and it cannot be used normally. When the stress exceeds the elastic limit , after entering the yield stage, the deformation increases rapidly, and at this time, in addition to elastic deformation, some plastic deformation occurs."
These contents are all the contents of the professional books he studied. For students, in the classroom, there is no more suitable tool for hypnosis than these boring contents.
Likewise, Alicia cannot avoid:
Her eyes were blurred, and her eyelids were constantly moving up and down.
Because of her stubborn nature, she tried to fight against the drowsiness she had never experienced before to prove that Aaron's solution was ineffective.
However, she failed. Her eyelids closed gently, and her consciousness flew away quickly.
Her body slumped in the lounge chair in such a relaxed manner that she fell asleep perfectly before she knew it.
the
Aaron smiled happily. Because it was almost as he expected, it was exactly the same as the scene in the novel.
One day, Alicia unexpectedly overcomes her first insomnia in the novel. That day, he happened to hear a complex magic spell being recited.
He fell asleep from the slow pace and endless reciting. Just like what happened just now.
Now Alicia tastes the sweetness of being able to sleep comfortably. He will never forget it.
She wouldn't be able to sleep without her lullaby service, which, of course, is actually her civil engineering book. It was a magic spell that only she knew.
Her smile became happy, and it also became evil.
"Now, all your sword skills are hers."
Lying in the armchair, Alicia rolled over, frowning.
Because he has to guard the bastard during the day. Therefore, she suffers from insomnia every night.
In this case, he also has no time and energy for sword training, exhaustion is a matter of course.
"But I slept more today."
Feeling the satisfaction of her body, Alicia smiled contentedly.
But Alicia's smile didn't last long.
"···Are you up yet?"
She heard a voice that instinctively disgusted her.
"Is it a dream?"
No, this is not a dream. Because she hasn't had a dream for many years.
Maybe it's the lack of sleep. Alicia turned around, trying to escape the sound. But even that didn't stop her from hearing voices again.
"It's time for you to wake up, you sleepy beauty.
....What? This is not hallucination. Alicia can now be sure that what she hears is the voice from reality.
"She's a Sleeping Beauty? What's that?
Alicia woke up dazedly.
For many years, she suffered from insomnia. At least, she's not the type of person who needs to hear other people's voices to fall asleep. Also, her senses are sharper than anyone on the territory.
But, how could she be so dull today? When someone came to her and spoke, she couldn't wake up immediately.
Alicia opened her eyes. Then, her whole body froze as she saw an annoying guy looking at her:
"Wake up. If she doesn't wake you up, you'll be asleep until noon. Not a good thing for a knight."
"..."
A dark-haired youth stood beside a reclining armchair. She thought he was in his twenties. He was all smiles. That grin looked wicked, like the grin of a villain who finds a nice toy.
"Aaron?"
Alicia muttered unconsciously. Her mumbling could be clearly heard by Aaron.
This man is the one she escorted and the troublemaker of the land. Although he's been acting weird lately, which has everyone wondering what new tricks he's up to.
"You recognized her at last. Oh, her God! What should she do?"
"···"
Alicia looked at the man in front of her with complicated emotions.
"So, why are you here?"
Alicia really couldn't understand the current state. That's normal, and for someone who's finally freed herself from insomnia, her first sleep was nothing less than a thrilling adventure.
So it's understandable when she struggles to recognize the status quo.
"Why did Aaron wake her up?"
This has never happened before. This seems completely impossible.
The one who always oversleep is this jerk, Aaron. And she, Alicia, every morning, the first thing she does after opening her eyes is to wake up this man.
However, why is he smiling smugly now, and then looking at himself with his arms around him?
"Why? It's not because you sleep here."
"She? Sleeping here?"
"Um."
"how so?"
"Don't you remember what happened last night?"
"Last night, she..."
"You were completely asleep. Sleeping like a baby. Even snoring and grinding your teeth. Really, she couldn't imagine a beautiful girl making that sound."
"···"
"Last night, she sang you a lullaby that only she can master. For someone who heard it for the first time, she was surprised that you could persist for more than ten minutes before falling asleep. After all, even she felt sleepy ."
...Alicia feels like she doesn't know anything about it. To tell the truth, her memory only stuck with her just sitting on this chair.
However, her mind is much clearer now than before.
She began to savor this taste called sleep. It feels strange, but wonderful.
"You're such a troublesome guy, she understands, you haven't fully recovered yet. Drink this and cheer yourself up."
"..."
Aaron held up the glass, and Alicia could see fresh cold water swaying in the glass.
She swallowed the water at once, and then checked her condition.
While clenching her fists, she could feel an energy she had never felt before. There was a refreshing feeling as the blood flowed through the veins in her clenched fist.
This energetic state is completely different from her lack of sleep every day before!
"It's incredible."
Alicia wondered in her heart: Did she really get a good night's sleep? Did she get over that hellish insomnia?
Alicia readily accepts this reality. Because, the condition of the body doesn't lie. With her excellent examining skills, she decides to trust what her nerves are telling her.
However, one thing suddenly caught her attention.
"what is that?"
Alicia's eyes locked on Aaron. On Aaron's waist, to be precise. Aaron's waist was in front of him, and a wooden practice sword hung there.
Not only that. Aaron's attire was also unusual.
Lightweight and durable leather armor is worn over his everyday clothing. Leather guards were also strapped around his elbows and knees. He even had a towel around his neck to wipe off the sweat.
No wonder, he looked very serious.
"This is impossible."
Alicia unconsciously took a breath.
Seems to think of something. Her conjecture was subsequently confirmed by Aaron's answer.
"Did you forget? You promised to teach her swordsmanship if she cured your insomnia."
"..."
The answer is obvious.
Thanks to this, the events of last night flashed through her mind. Last night, she accepted Aaron's offer. It's a bet.
So what if Aaron succeeds in curing her insomnia? What if she falls asleep? Did she promise to teach that rogue swordsmanship?
So, now she has to teach that ruffian swordsmanship? he?
Insomnia troubled her for a long time. The joy of getting over this and getting a good night's sleep cools off quickly. Because, she feels like a huge problem.
"Well, let's start with running."
On the training ground, the weather is fine. Alicia stood on the side of the training ground and said.
"Please stand here."