Hi,
I was wondering if anyone has measured residual stresses without the use of a milling guide with micrometer like the one Vishay sells (RS-200) these things cost a pretty penny and The ASTM standard doesn’t overtly call out the need for it. When I called Vishay they said undertaking this task without the right equipment and training is a non starter which is $10k + $20k
Can anyone shed some light on this?
Cheers!
Is anyone else still feeling like a stress pot after completing the semester? I finished my last assignment about three days ago now and I still wake up every morning sweating from a bad dream or with this lingering anxiety that I can’t pinpoint to anything in particular. I’m trying to sit through the feelings, but it feels like maybe since I was in such a rush to get my assignments done, I didn’t properly address the stress surrounding them. I want to relax and enjoy my break but I’m not finding any release and it feels like the stress is still sitting on my back. Maybe it’s because I instantly had some assignments for work pop up. I haven’t started them yet because I wanted to give myself some time off.
Anyways, hope everyone is doing well!
I have had a hard few months and I was busy all the time with school and work. So when I found out my freinds are going for a trip this weekend I signed up. I told myself that I’m going to be super chill and don’t even think about work and school.
In car, like 5 minutes before reaching home I got a canvas notification that assignment is created. I check it and see that I have a geology lab DUE TONIGHT. Instantly every good feeling that i had from the trip was gone.
I didn’t say goodbye to my friends, I didn’t say hello to my family, I didn’t change my cloths full of sand, I just sat behind computer and typed away since i only had less than 2 hours to complete it.
I knew we only have labs Monday but professor never publishes the lab until after lecture so I thought this might be one of those special labs that we have to do before class and somehow I forgot about it.
But this lab was so hard, it didn’t make sense. How can our professor expect us to finish this without even having a lecture about the topic? I decided to ask my classmates and they told me that after 10 minutes professor emailed us that it’s due tomorrow. I didn’t see the email because I was freaking out at the moment.
Anyway, I saved what little I did and got ready for bed. But I’m still stressed even though I shouldn’t be and can’t sleep. Did you guys ever have an experience like this where the stress of situation doesn’t go away even after everything is resolved?
Hey guys this is my first post so if this isn't the place for this i'd greatly appreciate being pointed in the right direction.
So Residual loading is meant to be 'even' according to the theory side. you have a loading that goes past yield, then you unload which will create the black line as show both of these are symmetrical. And so you end up with one side of the beam being in tension, the other compression and then an elastic core.
But then why does the compression peak line up with the distance from the elastic core, yet the tension side doesn't.
These graphs are generated using Neutron diffraction data and so i would have thought that they'd be accurate.
https://preview.redd.it/int0cdbqtax11.png?width=938&format=png&auto=webp&s=78cec94f6c768b4243b45e94020f9ee672f98630
Edit*: i don't know how else to post this image, i can't seem to put it in comments so here is what the loading/unloading should look like for a moment if there is an elastic core
https://preview.redd.it/qpwy9yqrpdx11.png?width=633&format=png&auto=webp&s=1d7206955f18562e63d17cf9ed6a3be7522dbcd8
see that the edges of the loading are 'straight' because they have plastically deformed.
The test data still has that overall final shape, but the residual peaks have been moved up which would mean the elastic core is uneven. But that is super against the theory. like the centre of the beam will experience the lowest load due to a moment.
Hi All,
I have 2 steel samples, both have compressive Residual Stress (RS), one has twice the amount of RS than the other.
Now I have done Synchrotron radiation XCT (12 um, 80 KeV) on both the samples and it seems that the sample with higher RS has higher grayscale intensity, and the sample with lower RS has low grayscale intensity.
Does the difference in residual stress causing the change in grayscale intensity level even though the chemical composition of both the sample are same?
Thank you.
If the diameter is about 7mm would the residual stress from machining the test sample significant? If so would I have to try plasma? or annealing post machining?
Another wall of text incoming. TL;DR at the bottom.
DISCLAIMER: I concocted this thought process while studying Norse religion and culture. However, for this post, I will attempt to remove any religious aspects and keep it strictly stress-management related. If you practice heathenry or Asatru, please do not tear me apart over the stuff posted here. It is my interpretation and utilization of what I have learned while studying heathenry, that I use in daily life to manage stress. It is not meant to be an end-all description of heathenry. This subreddit is not for religious discussion, and this post is not meant to be a discussion of religion.
INTRO:
(You don't have to read this part to get the benefit of the training. This is just background info.)
I wrote this post about stress management that many of you seemed to enjoy. However, several of you asked me to elaborate on my briefly mentioned method for dealing with Residual Stress, aka Emotional Baggage. So I'm going to attempt to do so here. Residual Stressors are very difficult to deal with. They vary greatly in severity and amount. Some people have a LOT, and some people have barely any. Either way, they add to your pile of stressors, but are somewhat worse because they are almost impossible to truly remove. So this method I've developed, based off the "heathen worldview", (also mentioned by some redditors as being called "stoicism"), is something I've used for a few years now and it has almost completely solved my residual stress issues.
We've covered stress being physical blocks stacking up on your life. So now picture residual stress as being a pile of sand beneath the pile. Depending on how tall the pile of sand is, it will cause your stressors to start their stack higher or lower than the next person. It's basically like your baseline. You'll almost always be stressed that amount, even if all your other stressors were gone, because it's always just there at the bottom. In the training I underwent with the pilot, he didn't go very far into dealing with that type of stress because
... keep reading on reddit ➡I had a stress fracture in my right forefoot. Toe next to the big toe. I haven't been running since April 1st. Last week, I had a follow-up appointment with my ortho. We looked at my current x-ray and he showed me my previous one. He pointed out how the bone is thicker now and when I saw a line in the thicker part, I asked him about it. He said that's a residual fracture. He gave me the okay to start running again and mentioned starting off at a slower pace.
I have been trying to find information about residual fractures and no luck. Has anyone heard of this before and is it really okay to start running? I want to get back to running badly, but nervous about reinjury.
Cotton, C. A candidate test-piece to investigate creep crack growth in a residual stress field. Diss. M. Sc. Thesis, University of Sheffield, UK, 1997.
Thanks guys
Today is day 57 for me, and overall, in terms of my cessation of weed, I'm doing well. However, in terms of my overall mental health, I would give myself a B overall.
I began smoking in 2010 regularly. I had smoked my first time in 2008, but for those two years I never bought any, and only smoked socially when other people presented the opportunity to me. I didn't seek it, there was no desire. Once I really began smoking regularly during my sophomore year of college, I only picked up speed. I smoked through my last two years of college, got decent grades, had successful(and unsuccessful) relationships with some women, and broadened my group of friends. I then smoked for several more years post graduation, got several jobs and took time to relax so that I could decide what my next step would be.
During all this time, I don't think weed was too bad for me in most regards. My asthma was definitely one of the worst, though after nearly two months it's well controlled. There is one place where I think I truly fucked up, and that is the heart of this post.
I ignored the numerous small, but growing sources of stress in my life.
Life only gets harder as you grow older, for the most part. And during a very transformative portion of my life, ~20-25, I was numbing myself with weed. I grew up in a dysfunctional household with a physically, but more so emotionally and verbally abusive mother. I never resorted to drugs during that time, rather I adopted strategies such as rationalizing, focusing on positive things, and trying to drown out my negative world in video games. Sure, those are not flawless strategies, and I'll be the first to admit that, but they helped me get through it. So why is it then that I got sucked into weed after that when my life was exponentially less stressful?
Well, I think it comes back to the deceptive allure of weed, and the common misconception that it's hardly even a drug. Because while my life had certainly improved once I moved out of my Mom's house, many other stresses popped up. Bills, loss of childhood innocence, responsibility of a real job, of college, some truly fucked up relationships etc. And instead of taking these on one at a time like I did pre-weed, I sort of put them all on the back burner, some more than others.
So now here I am, almost two full months of not smoking, and feeling in some ways much better, but in some ways worse. I'm at an interesting crossroads where I am making progress, but still have days where
... keep reading on reddit ➡Compressive residual stresses with induced plastic deformation of a top metal surface is from literature, beneficial to the fatigue life a cyclically loaded specimen.
However, when I induce said plastic deformation and compressive stresses through a rolling process in a cross-hole present on a bar, and cyclically torque said bar, I am ending up with a worse fatigue outcome. I am confused as to why. I would appreciate any insight/reading material/suggestions into this.
Hey everyone!
I'm new to Ansys additive and want to predict distortions and residual stresses for a simple part. I'm looking for tutorials and resources that could help me learn the various features of the Ansys additive suite. I checked online but couldn't find any, it would be great if someone can help me out with this.
Thank you!
Hello, so I had first episode of BPPV (hopefully the last too) and was able to self diagnose and do the half somersault movement thanks to this group. Was able to see an ENT that morning too to confirm even if I didn’t have vertigo anymore at time.
Now just want to ask when the dizziness will go away? The world’s not spinning anymore when I move my head but there’s constant dizziness, like motion sickness and constantly feel like vomiting. I can’t eat and have ongoing dull headache. ENT gave me betahistine but haven’t really felt it working since I still feel so dizzy.
Thank you!
I’ve come to realize something super annoying about my anxiety. If I’m going through a stressful situation, such as a huge project or final exams, I’m stressed out but generally not feeling horrible. I keep thinking once everything is over I’ll feel relaxed.
But once the stressful situation passes, my stress goes down and my anxiety spikes. It’s either a weird sense of doom or it’s my health anxiety that just escalates. It makes me feel like I can never relax.
Does anyone ever experience this? I’ve had this happen to me multiple times now, and it’s making me start dreading having relaxing times 😔
As a groundwork, I am a legally blind woman who was born legally blind and cannot be cured. Just so you have insight into my perspective. Legal blindness takes many many forms, and while I personally can see colors and images up close (like an inch from my eye) other types of blindness can vary greatly.
I love fantasy. I love stories with magic and especially ones where main characters are reincarnated or are born as characters in their favorite books (isekai is the genre name).
But I am getting so frustrated with seeing this genre's "magic away the abuse/disability/scars/injuries/etc." It's so common and it grates on me when I see it. Seeing FL's getting abused and killed and injured and then... Magic priest guy (usually) just makes it all better. That's just ... So frustrating.
We see it alot. We see it as a center theme. We see it in passing moments. And while I am neutral to the idea of healing magic getting rid of small wounds or only fresh wounds, it's so annoying to see disabilities being erased.
I will admit that disability makes a lot of abled people uncomfortable. I get it. Especially when you don't have a disability, the thought of being disabled must be truly scary. It's easier and less stressful to just hide from it and not think about it. So I don't want anyone to think that their discomfort with disability is their fault or abnormal. Cause I do understand. Life can be a cruel place and thinking about something scary happening to you in such an already unforgiving world is truly stressful. So, just don't have disabled characters. Please. I'm getting really tired seeing abled people throw disabled characters into stories. Just leave us alone. Please. I'm not trying to be sarcastic. I'm not trying to be edgy. Please just stop doing it.
You may wonder 'why?' Isn't representation important? Yes! But only when it's done well. And it's my personal belief that most abled authors are not able to accurately, or authenticity have disabled characters in their stories. Most. There are exceptions, and readers will inevitably have a variety of opinions too. There's probably a large number of people with disabilities who will read this and disagree with me. So I'm only offering my own personal opinions.
Let me further explain why I don't think including disabled characters is helpful. Let's say an abled author decides to put a disabled character in their book/movie/comic/game/whatever. If the author gives that character even a few scenes in the
... keep reading on reddit ➡
