Che210 ساعدونا في حل الاسايمنت يا شباب

[na07]

مساكم الله بالخير يا شباب

الدكتور احمد عرفات اعطانا واجب يوم الثلاثاء الماضي ولازم نسلمه يوم الثلاثاء القادم

ياليت احد يشرح لنا الاسئلة ويدلنا على الاجوبة من اللي درسوا عنده سابقا

Q1- Write short paragraph explaining the explatment support your answer by example ?
(Since strength and ductility tend to be incompatible, the designer must often optimize between the two parameters).


Q2- # Drive or how can you find the equation that can be used to calculate the yield stress?

ننتظركم

[zelme]

الله يخلي الدكتور سميع الله

لا واجب ولا شئ،،، حنا اصلا محنا ملاقين الكتاب حتى يعطونا واجب
الله يهديهم بعض الدكاترة يعطو واجب وحنا محنا ملاقين الكتب في المكتبات

الله المستعان

[Eng.Ashraf]

الاسئلة شكلها ما يطمّن ..

انا عند سميع الله

و بالنسبة للكتاب ,,
تحصلوه مصور (فقط)عن مكتبة الوديان جنب ليتل سيزر عند المكتبات اللي مقابل مدخل 6
و بــ 45 ريال و ما يستاهل خمسة ريال تصوير زفت ما يمديك تقرا شئ

[na07]

المهم ما علينا من الكتاب هههههههههههه

السؤالين هذولي هو نقلنا اياها

نبغى احد يفزع لنا يا جماعة الخير

[na07]

معقولة ما احد فيكم حله ؟؟؟؟؟

[HMIS]

Dear Na07,

in such case, you should search and dig for the information for yourself. you are a chemical engineering student!! please realize this.


anyway, first, think about the definitions of these two terms. What is ductility? well, as far as I know, ductility is the ability of the material to deform plastically.
as you may know that you have two different types of deformation; elastic: not permanent, and plastic: permanent. Once the material can deform plastically before it fails or break, then it is said to be ductile.

on the other hand; what is strength? it is nothing but the resistance of the material to the applied force! you should have had an experiment in the llurgy lab that showed you clearly how materials resist tension forces, I guess "tensile test". you should have drawn graphs of the behavior of several materials.

Now, what is the connection between strength and ductility? in production, engineers main focus is to produce materials have high strength but maximum ductility!! it is indeed difficult to have such material!! why? this is because when increase the material strength, it loses some of its ductility! and vice versa.. this is why engineers should optimize between these two parameters.

a clear example of high strength and nearly no ductility (very low ductility) material is tungsten. consider a rod of tungsten and then apply the tensile test to it, if you can recall the tensile test graphs in your lab notes, you will only experience an elastic phase for tungsten then the material fails!!

an example of solid materials with ductility is copper, take copper rod and apply the same test to it, you should observe two phases; elastic and plastic.

what we want as engineers is to have materials with good ductility to avoid sudden failure or fracture.

this is just what I could remember in this topic!! I hate writing here!! I prefer talking instead of that!! anyway, you still can search on the internet for lots of information


best regards

HMIS

[na07]

Thank you, but I was lost and I do not know how can I solve it , therefore asked for help

[وما توفيقي الا بالله]

شباب في الوديان في سلايدات الدكتور الوزان يمكن تستفيدون منها حق الماتريال