Fracture Mechanics Lab
Fracture Mechanics Lab
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Відео

An Interview with Professor Ashok SaxenaAn Interview with Professor Ashok Saxena
An Interview with Professor Ashok Saxena
Переглядів 483 місяці тому
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...
How to deliver a talkHow to deliver a talk
How to deliver a talk
Переглядів 267 місяців тому
ECCC Talk: Creep Crack Growth in Stainless Steels Part 1ECCC Talk: Creep Crack Growth in Stainless Steels Part 1
ECCC Talk: Creep Crack Growth in Stainless Steels Part 1
Переглядів 121Рік тому
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 testsECCC Talks: Predicting conventional secondary creep parameters from small punch creep tests
ECCC Talks: Predicting conventional secondary creep parameters from small punch creep tests
Переглядів 63Рік тому
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 2ECCC Talk: Creep Crack Growth in Stainless Steels Part 2
ECCC Talk: Creep Crack Growth in Stainless Steels Part 2
Переглядів 62Рік тому
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 deformationHow a crack is influenced in a Dissimilar Metal Weld under creep deformation
How a crack is influenced in a Dissimilar Metal Weld under creep deformation
Переглядів 48Рік тому
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 WeldEffect of Under and Overmatching interfaces on crack in a Weld
Effect of Under and Overmatching interfaces on crack in a Weld
Переглядів 80Рік тому
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 embrittlementMM504 Lecture 32: Environmental Assisted cracking and hydrogen embrittlement
MM504 Lecture 32: Environmental Assisted cracking and hydrogen embrittlement
Переглядів 108Рік тому
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 fractalsMM504 Lecture 33b: Chaos and order, Self-symmetry, Mandelbrot fractals
MM504 Lecture 33b: Chaos and order, Self-symmetry, Mandelbrot fractals
Переглядів 26Рік тому
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 crackMM504 Lecture 31: Creep-Fatigue crack
MM504 Lecture 31: Creep-Fatigue crack
Переглядів 95Рік тому
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/dtMM504 Lecture 33a: Environmental Assisted Cracking and da/dt
MM504 Lecture 33a: Environmental Assisted Cracking and da/dt
Переглядів 44Рік тому
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 experimentMM504 Lecture 29: Paris Law and Young's double slit experiment
MM504 Lecture 29: Paris Law and Young's double slit experiment
Переглядів 117Рік тому
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 parametersMM504 Lecture 24: Creep and Stress Rupture test, LMP and MG parameters
MM504 Lecture 24: Creep and Stress Rupture test, LMP and MG parameters
Переглядів 473Рік тому
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 hardeningMM504 Lecture 28: Cyclic softening and hardening
MM504 Lecture 28: Cyclic softening and hardening
Переглядів 606Рік тому
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...

КОМЕНТАРІ

  • @gabrielcoutinho1470
    @gabrielcoutinho1470 18 днів тому

    Very good presentation. Could you please share the title of the UM/OM study that was mentioned during the presentation. I couldt find it online. My best

  • @liaqatali8938
    @liaqatali8938 5 місяців тому

    😂

  • @liaqatali8938
    @liaqatali8938 5 місяців тому

    How r u

  • @liaqatali8938
    @liaqatali8938 5 місяців тому

    What is difference between stress rupture and creep rupture test

  • @leland9002
    @leland9002 6 місяців тому

    'Promo sm'

  • @imdadimmu8741
    @imdadimmu8741 Рік тому

    My topic is Fatigue behaviour of stud shear connectors in steel concrete composite beams

  • @imdadimmu8741
    @imdadimmu8741 Рік тому

    Please send your contact number

  • @imdadimmu8741
    @imdadimmu8741 Рік тому

    I want to learn Abacus software related to my research work

    • @fracturemechanicslab4008
      @fracturemechanicslab4008 Рік тому

      Join the workshop to learn Cohesive zone and VUMAT UMAT subroutines at sites.google.com/iitrpr.ac.in/iconfirm/workshops/damage-modelling?authuser=0

  • @imdadimmu8741
    @imdadimmu8741 Рік тому

    Thanks for support

  • @UnderPROCESSing
    @UnderPROCESSing Рік тому

    Coble creep and NH creep relation got interchanged.

  • @drjbjp
    @drjbjp Рік тому

    🎉🎉🎉

  • @drjbjp
    @drjbjp Рік тому

    🎉

  • @saifurahmanzaland8171
    @saifurahmanzaland8171 Рік тому

    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.

  • @sud476
    @sud476 Рік тому

    Nice lecture sir

  • @rahulroushanjha
    @rahulroushanjha Рік тому

    Sir, Will you teach strain life fatigue also in your coming lectures?

  • @sarojtiwari894
    @sarojtiwari894 Рік тому

    Wonder full

  • @rahulroushanjha
    @rahulroushanjha Рік тому

    Please explain bauschinger effect.

  • @NJCLM
    @NJCLM Рік тому

    there are no sound on the first minutes

  • @rahulroushanjha
    @rahulroushanjha Рік тому

    Sir, Please make a proper playlist where lectures can be seen sequentially.

    • @fracturemechanicslab4008
      @fracturemechanicslab4008 Рік тому

      Thanks. I just uploaded the file. The playlist is here: ua-cam.com/play/PLiEHB2q_CE6Yj7EYaKaaut3KiGAU-a-BB.html

  • @sh3131
    @sh3131 2 роки тому

    can you give me a brief note on scope of computation mechanics mtech programme in iit ropar

    • @fracturemechanicslab4008
      @fracturemechanicslab4008 2 роки тому

      The program you are talking about is started by the mechanical engineering department. You may contact them directly.

  • @alirezamoradi9009
    @alirezamoradi9009 2 роки тому

    Thank you for all

  • @narendrakumargadwal5968
    @narendrakumargadwal5968 2 роки тому

    can you provide full abaqus model?

    • @fracturemechanicslab4008
      @fracturemechanicslab4008 2 роки тому

      Full model will come at a price. Send me an email if you like abhishek.tiwari@iitrpr.ac.in

  • @awanishkumarmishramishra3123
    @awanishkumarmishramishra3123 3 роки тому

    Nice talk sir

  • @yassermouslih2949
    @yassermouslih2949 3 роки тому

    Hello, can you explain intuitively the meaning of eshelby stress in configurational mechanics?

  • @surajbhanmundotiya3816
    @surajbhanmundotiya3816 3 роки тому

    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.

  • @ishikachaudhary8099
    @ishikachaudhary8099 3 роки тому

    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

  • @kunikamamoria7
    @kunikamamoria7 3 роки тому

    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.

  • @ashishkaushik7175
    @ashishkaushik7175 3 роки тому

    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

  • @syyyleeev
    @syyyleeev 3 роки тому

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