![Fracture Mechanics Lab](/img/default-banner.jpg)
- Видео 121
- Просмотров 23 691
Fracture Mechanics Lab
Индия
Добавлен 20 мар 2020
An Assistant Professor at Indian Institute of Technology Ropar, Punjab in the department of Metallurgical and Materials Engineering.
An Interview with Professor Ashok Saxena
Professor Saxena, President and CTO, WireTough Cylinders, Bristol,
Virginia, USA, and Distinguished Professor (retired) and Dean
Emeritus, University of Arkansas.
Prof. Saxena had a long career in the field of Materials which began as
a Research Metallurgist in National Steel Corporation in Weirton, West
Virginia in 1974, followed by an appointment as Fellow Scientist at
Westinghouse R&D Center, Regents’ Professor, and Chair of the
School of Materials Science and Engineering at Georgia Tech, and as
Distinguished Professor and Dean of Engineering, and later as Provost
and Vice-Chancellor at University of Arkansas, Fayetteville.
During this period, Professor Saxena developed many courses for UG
an...
Virginia, USA, and Distinguished Professor (retired) and Dean
Emeritus, University of Arkansas.
Prof. Saxena had a long career in the field of Materials which began as
a Research Metallurgist in National Steel Corporation in Weirton, West
Virginia in 1974, followed by an appointment as Fellow Scientist at
Westinghouse R&D Center, Regents’ Professor, and Chair of the
School of Materials Science and Engineering at Georgia Tech, and as
Distinguished Professor and Dean of Engineering, and later as Provost
and Vice-Chancellor at University of Arkansas, Fayetteville.
During this period, Professor Saxena developed many courses for UG
an...
Просмотров: 43
Видео
ECCC Talk: Creep Crack Growth in Stainless Steels Part 1
Просмотров 117Год назад
The work was presented by Mr. Awanish Mishra a PhD scholar from Department of Metallurgical and Materials Engineering IIT Ropar in European Creep Collaborative Committee conference in Edinburgh on 23rd May 2023.
ECCC Talks: Predicting conventional secondary creep parameters from small punch creep tests
Просмотров 63Год назад
This talk was presented by Mr. Ritesh Gupta a PhD scholar from MNIT Jaipur at European creep collaborative committee conference in Edinburgh on 24th May 2023.
ECCC Talk: Creep Crack Growth in Stainless Steels Part 2
Просмотров 58Год назад
The work was presented by Mr. Awanish Mishra a PhD scholar from Department of Metallurgical and Materials Engineering IIT Ropar in European Creep Collaborative Committee conference in Edinburgh on 23rd May 2023.
How a crack is influenced in a Dissimilar Metal Weld under creep deformation
Просмотров 45Год назад
The work was presented at European Creep Collaborative Committee conference in Edinburgh on 24th May 2023.
Effect of Under and Overmatching interfaces on crack in a Weld
Просмотров 76Год назад
This talk authored by Mr. Rohit Upadhyaya was presented at ECCC Conference in Edinburgh on 22nd May 2023.
MM504 Lecture 32: Environmental Assisted cracking and hydrogen embrittlement
Просмотров 100Год назад
Environmental assisted cracking (EAC) is a phenomenon where a material experiences cracking due to the combined effects of a corrosive environment and mechanical loading. One type of EAC is hydrogen embrittlement (HE), where the presence of hydrogen in a metal can cause it to become brittle and prone to cracking. Hydrogen embrittlement can occur during manufacturing, surface treatment, or servi...
MM504 Lecture 33b: Chaos and order, Self-symmetry, Mandelbrot fractals
Просмотров 23Год назад
There is a mistake in the first graph. It should have been between r vs saturated value of population Xn. Chaos theory is the study of complex and unpredictable systems that are highly sensitive to initial conditions. Chaos theory has applications in various fields, including physics, mathematics, economics, and biology. Mandelbrot fractals are a type of complex, self-similar geometric pattern ...
MM504 Lecture 31: Creep-Fatigue crack
Просмотров 83Год назад
Creep-fatigue crack behavior refers to the phenomenon where a material under cyclic loading and elevated temperature experiences damage and cracking. Creep is a time-dependent deformation of a material under a constant load, and fatigue is the weakening of a material due to cyclic loading. The combination of creep and fatigue can lead to the formation and growth of cracks, which can significant...
MM504 Lecture 33a: Environmental Assisted Cracking and da/dt
Просмотров 40Год назад
Environmental assisted cracking (EAC) is a phenomenon where a material experiences cracking due to the combined effects of a corrosive environment and mechanical loading. One type of EAC is hydrogen embrittlement (HE), where the presence of hydrogen in a metal can cause it to become brittle and prone to cracking. Hydrogen embrittlement can occur during manufacturing, surface treatment, or servi...
MM504 Lecture 29: Paris Law and Young's double slit experiment
Просмотров 113Год назад
The double slit experiment, first conducted by Thomas Young in the early 19th century, has continued to yield fascinating results in modern times. Recent experiments have shown that the behavior of particles at the quantum level is inherently probabilistic, with individual particles exhibiting wave-like properties that interfere with each other as they pass through the double slits. This interf...
MM504 Lecture 24: Creep and Stress Rupture test, LMP and MG parameters
Просмотров 388Год назад
Creep and stress rupture tests are methods used to determine the long-term behavior of materials under constant or varying loads at high temperatures. Creep tests measure the deformation of a material over time under a constant load, while stress rupture tests determine the time it takes for a material to fail under a constant load. The Larson-Miller parameter and the MG parameter are two appro...
MM504 Lecture 28: Cyclic softening and hardening
Просмотров 551Год назад
Cyclic hardening and softening refer to the changes in material properties, specifically its hardness or strength, after undergoing repeated cycles of loading and unloading. Cyclic hardening occurs when the material becomes stronger and harder with each cycle, while cyclic softening is the opposite, where the material becomes weaker and softer with each cycle. These phenomena are commonly obser...
MM504 Lecture 27b Moore's test and S-N diagram
Просмотров 86Год назад
MM504 Lecture 27b Moore's test and S-N diagram
MM 504 Lecture 27a Introduction of fatigue
Просмотров 68Год назад
MM 504 Lecture 27a Introduction of fatigue
MM504 Lecture 26: C*-integral, Creep crack growth
Просмотров 95Год назад
MM504 Lecture 26: C*-integral, Creep crack growth
MM311 Lab 7 Modified Boundary Layer model: SSY condition
Просмотров 127Год назад
MM311 Lab 7 Modified Boundary Layer model: SSY condition
MM311 Lab 7 Partitioning SSY model using python script
Просмотров 86Год назад
MM311 Lab 7 Partitioning SSY model using python script
MM504: Lecture 21 Qualitative Fractography and Fractal Dimension
Просмотров 72Год назад
MM504: Lecture 21 Qualitative Fractography and Fractal Dimension
MM504 Lecture 22: Quantitative Fractography
Просмотров 104Год назад
MM504 Lecture 22: Quantitative Fractography
MM504: Lecture 17 A line integral to apply (J-integral)
Просмотров 411Год назад
MM504: Lecture 17 A line integral to apply (J-integral)
MM504: Lecture 18 Experiments to measure J-integral (Read, Landes & Begley and Rice)
Просмотров 452Год назад
MM504: Lecture 18 Experiments to measure J-integral (Read, Landes & Begley and Rice)
MM308: Lecture 10 Little bit of damage and its modelling
Просмотров 72Год назад
MM308: Lecture 10 Little bit of damage and its modelling
MM504: Lecture 16 Constraint, T-stress, Q-field and Weibull Triaxiality (Aw)
Просмотров 101Год назад
MM504: Lecture 16 Constraint, T-stress, Q-field and Weibull Triaxiality (Aw)
MM308 Lecture 6 Part 2: Triangular Element shape functions and B matrix
Просмотров 44Год назад
MM308 Lecture 6 Part 2: Triangular Element shape functions and B matrix
MM308: Lecture 9 Ductile damage experiments and modelling
Просмотров 79Год назад
MM308: Lecture 9 Ductile damage experiments and modelling
MM504: Lecture 15 Master curve approach, a tribute to Prof. Kim Wallin
Просмотров 119Год назад
MM504: Lecture 15 Master curve approach, a tribute to Prof. Kim Wallin
😂
How r u
What is difference between stress rupture and creep rupture test
'Promo sm'
My topic is Fatigue behaviour of stud shear connectors in steel concrete composite beams
Please send your contact number
Its on our department website
I want to learn Abacus software related to my research work
Join the workshop to learn Cohesive zone and VUMAT UMAT subroutines at sites.google.com/iitrpr.ac.in/iconfirm/workshops/damage-modelling?authuser=0
Thanks for support
Coble creep and NH creep relation got interchanged.
That could have happened. Sometimes I forget.
🎉🎉🎉
🎉
Hello Sir, I hope you are doing well. Sir, In the S-N curve, you told that the vertical axis is related to mean stress, but i think it is related to stress level which is the ratio of maximum flexural fatigue strength and static flexural strength of the sample.
Nice lecture sir
Sir, Will you teach strain life fatigue also in your coming lectures?
Wonder full
Please explain bauschinger effect.
there are no sound on the first minutes
Sir, Please make a proper playlist where lectures can be seen sequentially.
Thanks. I just uploaded the file. The playlist is here: ruclips.net/p/PLiEHB2q_CE6Yj7EYaKaaut3KiGAU-a-BB
can you give me a brief note on scope of computation mechanics mtech programme in iit ropar
Thank you for all
can you provide full abaqus model?
Full model will come at a price. Send me an email if you like abhishek.tiwari@iitrpr.ac.in
Nice talk sir
Hello, can you explain intuitively the meaning of eshelby stress in configurational mechanics?
1) The value of a shape function of a node is 1 for that particular node and 0 for other nodes. 2) The strain matrix for the quad element can be written as a B matrix multiply by a displacement matrix. 3 ) The force matrix which is a column matrix equals the stiffness matrix multiply by the displacement matrix. 4) In FEM the elastic modulus of the quad element can be written as a matrix which is denoted by D. 5) We can write the Generalised Degree of Freedom as the multiplication of shape function and degrees of freedom at every node.
1) We derived the shape function for bilinear quadratic elements 2) The shape function at each node has a value of 1 for that particular node number where they are defined and is 0 for other node numbers. 3) We found the generalised degree of freedom, and it can be written as a matrix multiplication of shape function and degree of freedom for each node 4) We formulated the B matrix, the derivative of shape function wrt local coordinates. 5) we also found the strain matrix, which is matrix multiplication of B x(displacement matrix) 6) we learnt D matrix for bilinear quadratic elements and also about how Jacobian matrix relates the local coordinates and the global coordinates
1. Quadratic Bilinear Element Description. 2. Shape Function; Writing shape function for every node. 3. The value of shape function N1 is zero for every node except the node for which this shape function is written, i.e. i=1. Similarly we can write for N2, N3 and N4. 4.Generalised Degree of Freedom can be written as the multiplication of shape function & the and degrees of freedom at every node.
1) Values of local coordinates wont change even if the shape or global coordinates are changed 2) Displacement at local nodes can be calculated which can be related to the overall displacement and using isoparametric calculation we can obtain the generalized degrees of freedom 3) Similarly we can do the strain calculation also we can obtain K
Best Datting Click 🔽 18cams.xyz 在整個人類歷史上,強者,富人和具有狡猾特質的人捕食部落,氏族,城鎮,城市和鄉村中的弱者,無`'守和貧窮成員。然而,人類的生存意願迫使那些被拒絕,被剝奪或摧毀的基本需求的人們找到了一種生活方式,並繼續將其DNA融入不斷發展的人類社會。 說到食物,不要以為那些被拒絕的人只吃垃圾。相反,他們學會了在被忽視的肉類和蔬菜中尋找營養。他們學會了清潔,切塊,調味和慢燉慢燉的野菜和肉類,在食品市場上被忽略的部分家用蔬菜和肉類,並且學會了使用芳香的木煙(如山核桃,山核桃和豆科灌木 來調味食物煮的時候 1618516824