Fracture toughness and Impact Strength | Dental Materials

[@fatimazaidi7298]

Sir just keep making videos.....you develope my interest in a subject like dental material and please complete this chap ASAP. Your hardwork is truly appreciated :)

[@TheDentalistt]

Thanks a lot! Definitely completing it asap and not stopping this time. Thanks for your comment, gives us great motivation ☺️

[@alizayfatimah6787]

Plz plz keep on making videos . There is no other youtube channel which clears DM concepts like this ..

[@TheDentalistt]

Thanks will start again soon ☺️

[@sabramamji5890]

@@TheDentalistt Still waiting 🥺

[@alexandraandronik7479]

please don`t stop making this videos!!!!!!!!!!

[@sana_art_vlogs1996]

Q1-b, Q2- d, Q3-b, Q4-b, Q5-d

[@fatota3464]

Thank you so much

[@TheDentalistt]

You're welcome 😊

[@sairalakhani1659]

Sir do you teach from mccabe?

[@TheDentalistt]

Yes we are following Mc Cabe for all the lectures

[@fatimazaidi7298]

Sir, what is stress intensification factor and critical stress ???

[@TheDentalistt]

I would ask you to break this terminology, which would make it easier to understand, 'Stress' and 'Intensification' Stress intensification factor of a material is a theoretical factor related to cracks/notches in a material, due to which stress is believed to be intensified in a material, causing an increase in the propagation of cracks, resulting in the material losing its dimension, or getting closer to its fracture point. Stress intensification factor is formulated as Applied Stress X crack dimensions (length/width) If a crack/notch size is 2 square meters and stress applied is 4 Pa. Stress intensification factor would be 8 In situations where the crack size is larger, the stress intensification value would be greater, showing that the material has greater chances of bearing intensified stress, resulting in more crack propagation, and Ultimately losing its dimension. In other words, If a material already has cracks or notches, a greater Stress intensification factor value would prove that it is easier for the cracks to propagate, that makes the material weaker and makes it easier for it to lose its shape, become dimensionally unstable or fracture. Critical stress is the maximum stress applied after which the material tends to change its shape/dimensions I hope it's clear. If you still have any confusions, please let me know. Thanks and all the best 👍

[@fatimazaidi7298]

@@TheDentalistt Got it....thanks a ton🙏🏼😊

[@humerafarooq6409]

Q1 b Q2 d Q3 b Q4 b Q5 d

[@jacinto1124]

😣 pr໐๓໐Ş๓