❞ كتاب Questions and Answers in Mechanical Engineering Part One ❝  ⏤ أسامة محمد المرضي سليمان

❞ كتاب Questions and Answers in Mechanical Engineering Part One ❝ ⏤ أسامة محمد المرضي سليمان

Questions and Answers in Mechanical Engineering Part One

Prepared by Osama Mohammed Elmardi Suleiman Nile Valley University – Faculty of Engineering & Technology

Question One What are Mechanical Properties of Material which every Mechanical Engineer Should Know? Mechanical properties of material: There are mainly two types of materials. First one is metal and other one is nonmetals. Metals are classified into two types: Ferrous metals and Non-ferrous metals. Ferrous metals mainly consist iron with comparatively small addition of other materials. It includes iron and its alloy such as cast iron, steel, HSS etc. Ferrous metals are widely used in mechanical industries for its various advantages. Nonferrous metals contain little or no iron. It includes aluminum, magnesium, copper, zinc etc. Most Mechanical Properties are associated with metals these are- #1. Strength: The ability of material to withstand load without failure is known as strength. If a material can bear more load, it means it has more strength. Strength of any material mainly depends on type of loading and deformation before fracture. According to loading types, strength can be classified into three types. 1. Tensile strength: 2. Compressive strength: 3. Shear strength: According to the deformation before fracture, strength can be classified into three types. 1. Elastic strength: 2. Yield strength: 3. Ultimate strength: #2. Homogeneity:
2
If a material has same properties throughout its geometry, known as homogeneous material and the property is known as homogeneity. It is an ideal situation but practically no material is homogeneous. #3. Isotropy: A material which has same elastic properties along its all loading direction known as isotropic material. #4. Anisotropy: A material which exhibits different elastic properties in different loading direction known as an-isotropic material. #5. Elasticity: If a material regains its original dimension after removal of load, it is known as elastic material and the property by virtue of which it regains its original shape is known as elasticity. Every material possesses some elasticity. It is measure as the ratio of stress to strain under elastic limit. #6. Plasticity: The ability of material to undergo some degree of permanent deformation without failure after removal of load is known as plasticity. This property is used for shaping material by metal working. It is mainly depending on temperature and elastic strength of material. #7. Ductility: Ductility is a property by virtue of which metal can be drawn into wires. It can also define as a property which permits permanent deformation before fracture under tensile loading. The amount of permanent deformation (measure in percentage elongation) decides either the material is ductile or not. Percentage elongation = (Final Gauge Length – Original Gauge Length) *100/ Original Gauge Length If the percentage elongation is greater than 5% in a gauge length 50 mm, the material is ductile and if it less than 5% it is not.
أسامة محمد المرضي سليمان - أسامة محمد المرضي سليمان ، مواليد مدينة عطبرة، ولاية نهر النيل-السودان في العام 1966
حاصل علي بكالوريوس الشرف في الهندسة الميكانيكية من كلية الهندسة بجامعة السودان للعلوم والتكنولوجيا في العام 1998.
ماجستير في ميكانيكا المواد المركبة من جامعة وادي النيل عطبرة في العام 2003. ❰ له مجموعة من الإنجازات والمؤلفات أبرزها ❞ الإقتصاد الهندسي ❝ ❞ إنتقال حرارة وكتلة أمثلة محلولة ومسائل إضافية ❝ ❞ التوربينات الغازية Gas Turbines ❝ ❞ تحليل الجملونات (Analysis of Trusses) ❝ ❞ ديناميكا حرارية ❝ ❞ مجموعة من أشهر الأمثال العربية والإنجليزيةCollection of Famous English and Arabic Proverbs ❝ ❞ آلات هيدروليكية المضخات و التوربينات النصف قطرية و المحورية السريان ❝ ❞ أجهزة قياس Measurments INSTRUMENTATION ❝ ❞ تصميم الأنظمة الميكانيكية ❝ الناشرين : ❞ جميع الحقوق محفوظة للمؤلف ❝ ❞ جامعة وادى النيل ❝ ❱
من الهندسة الميكانيكية - مكتبة كتب الهندسة والتكنولوجيا.

نبذة عن الكتاب:
Questions and Answers in Mechanical Engineering Part One

Questions and Answers in Mechanical Engineering Part One

Prepared by Osama Mohammed Elmardi Suleiman Nile Valley University – Faculty of Engineering & Technology

Question One What are Mechanical Properties of Material which every Mechanical Engineer Should Know? Mechanical properties of material: There are mainly two types of materials. First one is metal and other one is nonmetals. Metals are classified into two types: Ferrous metals and Non-ferrous metals. Ferrous metals mainly consist iron with comparatively small addition of other materials. It includes iron and its alloy such as cast iron, steel, HSS etc. Ferrous metals are widely used in mechanical industries for its various advantages. Nonferrous metals contain little or no iron. It includes aluminum, magnesium, copper, zinc etc. Most Mechanical Properties are associated with metals these are- #1. Strength: The ability of material to withstand load without failure is known as strength. If a material can bear more load, it means it has more strength. Strength of any material mainly depends on type of loading and deformation before fracture. According to loading types, strength can be classified into three types. 1. Tensile strength: 2. Compressive strength: 3. Shear strength: According to the deformation before fracture, strength can be classified into three types. 1. Elastic strength: 2. Yield strength: 3. Ultimate strength: #2. Homogeneity:
2
If a material has same properties throughout its geometry, known as homogeneous material and the property is known as homogeneity. It is an ideal situation but practically no material is homogeneous. #3. Isotropy: A material which has same elastic properties along its all loading direction known as isotropic material. #4. Anisotropy: A material which exhibits different elastic properties in different loading direction known as an-isotropic material. #5. Elasticity: If a material regains its original dimension after removal of load, it is known as elastic material and the property by virtue of which it regains its original shape is known as elasticity. Every material possesses some elasticity. It is measure as the ratio of stress to strain under elastic limit. #6. Plasticity: The ability of material to undergo some degree of permanent deformation without failure after removal of load is known as plasticity. This property is used for shaping material by metal working. It is mainly depending on temperature and elastic strength of material. #7. Ductility: Ductility is a property by virtue of which metal can be drawn into wires. It can also define as a property which permits permanent deformation before fracture under tensile loading. The amount of permanent deformation (measure in percentage elongation) decides either the material is ductile or not. Percentage elongation = (Final Gauge Length – Original Gauge Length) *100/ Original Gauge Length If the percentage elongation is greater than 5% in a gauge length 50 mm, the material is ductile and if it less than 5% it is not.

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المزيد..

تعليقات القرّاء:

Questions and Answers in Mechanical Engineering Part One

Prepared by Osama Mohammed Elmardi Suleiman Nile Valley University – Faculty of Engineering & Technology

Question One What are Mechanical Properties of Material which every Mechanical Engineer Should Know? Mechanical properties of material: There are mainly two types of materials. First one is metal and other one is nonmetals. Metals are classified into two types: Ferrous metals and Non-ferrous metals. Ferrous metals mainly consist iron with comparatively small addition of other materials. It includes iron and its alloy such as cast iron, steel, HSS etc. Ferrous metals are widely used in mechanical industries for its various advantages. Nonferrous metals contain little or no iron. It includes aluminum, magnesium, copper, zinc etc. Most Mechanical Properties are associated with metals these are- #1. Strength: The ability of material to withstand load without failure is known as strength. If a material can bear more load, it means it has more strength. Strength of any material mainly depends on type of loading and deformation before fracture. According to loading types, strength can be classified into three types. 1. Tensile strength: 2. Compressive strength: 3. Shear strength: According to the deformation before fracture, strength can be classified into three types. 1. Elastic strength: 2. Yield strength: 3. Ultimate strength: #2. Homogeneity:
2
If a material has same properties throughout its geometry, known as homogeneous material and the property is known as homogeneity. It is an ideal situation but practically no material is homogeneous. #3. Isotropy: A material which has same elastic properties along its all loading direction known as isotropic material. #4. Anisotropy: A material which exhibits different elastic properties in different loading direction known as an-isotropic material. #5. Elasticity: If a material regains its original dimension after removal of load, it is known as elastic material and the property by virtue of which it regains its original shape is known as elasticity. Every material possesses some elasticity. It is measure as the ratio of stress to strain under elastic limit. #6. Plasticity: The ability of material to undergo some degree of permanent deformation without failure after removal of load is known as plasticity. This property is used for shaping material by metal working. It is mainly depending on temperature and elastic strength of material. #7. Ductility: Ductility is a property by virtue of which metal can be drawn into wires. It can also define as a property which permits permanent deformation before fracture under tensile loading. The amount of permanent deformation (measure in percentage elongation) decides either the material is ductile or not. Percentage elongation = (Final Gauge Length – Original Gauge Length) *100/ Original Gauge Length If the percentage elongation is greater than 5% in a gauge length 50 mm, the material is ductile and if it less than 5% it is not.


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أسامة محمد المرضي سليمان - Osama Mohammed Al Mardi Suleiman

كتب أسامة محمد المرضي سليمان أسامة محمد المرضي سليمان ، مواليد مدينة عطبرة، ولاية نهر النيل-السودان في العام 1966 حاصل علي بكالوريوس الشرف في الهندسة الميكانيكية من كلية الهندسة بجامعة السودان للعلوم والتكنولوجيا في العام 1998. ماجستير في ميكانيكا المواد المركبة من جامعة وادي النيل عطبرة في العام 2003. ❰ له مجموعة من الإنجازات والمؤلفات أبرزها ❞ الإقتصاد الهندسي ❝ ❞ إنتقال حرارة وكتلة أمثلة محلولة ومسائل إضافية ❝ ❞ التوربينات الغازية Gas Turbines ❝ ❞ تحليل الجملونات (Analysis of Trusses) ❝ ❞ ديناميكا حرارية ❝ ❞ مجموعة من أشهر الأمثال العربية والإنجليزيةCollection of Famous English and Arabic Proverbs ❝ ❞ آلات هيدروليكية المضخات و التوربينات النصف قطرية و المحورية السريان ❝ ❞ أجهزة قياس Measurments INSTRUMENTATION ❝ ❞ تصميم الأنظمة الميكانيكية ❝ الناشرين : ❞ جميع الحقوق محفوظة للمؤلف ❝ ❞ جامعة وادى النيل ❝ ❱. المزيد..

كتب أسامة محمد المرضي سليمان