Source: kinnala at YouTube: https://www.youtube.com/watch?v=G5K_04I_XkE
Source: hofu fan at YouTube: https://www.youtube.com/watch?v=qMBtYq9vc78
Source: EC2 Modélisation at YouTube: https://www.youtube.com/watch?v=fmKKFkREu8Q
Source: Lukasz Kaczmraczyk at YouTube: https://www.youtube.com/watch?v=03tQhVDHbQs
Source: PurdueMET at YouTube: https://www.youtube.com/watch?v=JFSn_XsAvho
These 16 Video-lectures contain High School level explanations of the Stress and Strain concepts, as well as Shear Stress, Young's Modulus, Compressibility, and Bulk Modulus
https://www.youtube.com/watch?v=IyvFpuFeDYc&list=PLX2gX-ftPVXW0OCjN3MrR2G07fYmtit-R
Source: Michel Van Biezen at YouTube; https://www.youtube.com/watch?v=IyvFpuFeDYc&list=PLX2gX-ftPVXW0OCjN3MrR2G07fYmtit-R
Source: CivBenBennett at YouTube: https://www.youtube.com/watch?v=1YBYHkkjvJI
Source: CivBenBennett at YouTube: https://www.youtube.com/watch?v=KxxTTf7kUTM
This is a College level Mechanics of Materials Course, consisting in 24 Video-lectures by Dr Yiheng Wang at Danville Community College
EGR 246 Mechanics of Materials
https://www.youtube.com/playlist?list=PLLbvVfERDon3oDfCYxkwRct1Q6YeOzi9g
Source: Yiheng Wang at YouTube: https://www.youtube.com/playlist?list=PLLbvVfERDon3oDfCYxkwRct1Q6YeOzi9g
Source: Dragonfly at YouTube: https://www.youtube.com/watch?v=5yZNKGxe0H8
Source: Zachary Arredondo at YouTube: https://www.youtube.com/watch?v=qrROIlBCZPE
Source: Zachary Arredondo at YouTube: https://www.youtube.com/watch?v=jYnSmeDsCiU
Source: Dan Fliesh at YouTube: https://www.youtube.com/watch?v=f5liqUk0ZTw
Source: keithjbowman at YouTube: https://www.youtube.com/watch?v=LEO9QqOJnHo&index=1&list=PL0oSopo5fjLBN95soeDJ6SqWOZw_DOqNd
Source: keithjbowman at YouTube: https://www.youtube.com/watch?v=ymUgGE2BoA0