DEPARTMENT OF MECHANICAL ENGINEERING

  Industry 4.0 and Smart Manufacturing 6 What is Industry 4.0? Industry 4.0 is the Fourth Industrial Revolution , where manufacturing industries use digital technologies such as IoT, Artificial Intelligence (AI), robotics, cloud computing, and data analytics to create smart factories . These factories can monitor, analyze, and optimize production with minimal human intervention. Evolution of Industrial Revolutions Industrial Revolution Period Major Technology Industry 1.0 1780–1870 Steam Engine Industry 2.0 1870–1970 Electricity and Mass Production Industry 3.0 1970–2010 Computers, PLCs, Automation Industry 4.0 2010–Present AI, IoT, Cloud, Robotics, Big Data What is Smart Manufacturing? Smart Manufacturing is a modern production system where machines, sensors, computers, and people communicate with each other in real time to improve productivity, quality, and efficiency. Key Technologies of Industry 4.0 Industrial Internet of Things (IIoT) Connects machines through sensors. Coll...

  Best Online Courses for Mechanical Engineering Students (2026) 7 Online courses help mechanical engineering students gain industry-ready skills beyond the classroom. Employers increasingly look for proficiency in CAD/CAM, Simulation, Robotics, AI, Industry 4.0, Manufacturing, and Programming in addition to core mechanical subjects. Leading platforms such as Coursera, edX, NPTEL, and MIT OpenCourseWare offer university-quality courses from institutions like MIT, Georgia Tech, IITs, Northwestern, and the University of Michigan. Course Platform Best For Certificate AI for Mechanical Engineers Coursera AI in Manufacturing ✅ Engineering Mechanics Coursera (Georgia Tech) Core Concepts ✅ Modern Robotics Specialization Coursera Robotics & Automation ✅ Fundamentals of Fluid Power Coursera Hydraulic & Pneumatic Systems ✅ Mechanical Engineering Courses edX Manufacturing & Design ✅ NPTEL Mechanical Courses NPTEL IIT-level Learning ✅ (Exam) MIT Mechanical Engineering MIT OpenCour...

  Mechanical Properties of Metals Often, materials are subject to an external force when they are used. Mechanical engineers calculate those forces, and material scientists determine how materials deform or break as a function of force, time, temperature, and other conditions. Materials scientists learn about these mechanical properties by testing materials. Some of the essential mechanical properties of the metals are Brittleness, Creep, Ductility, Elasticity, Fatigue, Hardness, Malleability, Plasticity, Resilience, Stiffness, Toughness and Yield strength. The mechanical properties of metals are explained briefly below. Brittleness: The tendency of a material to fracture or fail upon applying a relatively small amount of force, impact or shock. Creep: When a metal is subjected to a constant force at a high temperature below its yield point for a prolonged time, it undergoes a permanent deformation. Ductility: Ductility is the property by which a metal can be drawn into thin wires...

Types of Mechanical Forces A force exerted on a body can cause a change in either the shape or the motion of the body. The unit of force in SI system is the newton (N) and CGS system is dyne. No solid body is perfectly rigid and when forces are applied to it, changes in dimensions occur. Such changes are not always perceptible to the human eye since they are negligible. For example, the span of a bridge will sag under the weight of a vehicle and a spanner will bend slightly when tightening a nut. Civil engineers and designers need to appreciate the effects of forces on materials, together with the mechanical properties of materials. Three main types of mechanical forces can act on a body. They are: Tensile force Compressive force and Shear force 1. Tensile force Tensile force that tends to stretch a material, as shown in Figure 1 below. For example, Rubber bands, when stretched, are in tension. The rope or cable of a crane carrying a load is in tension. When a nut is tightened, a bolt ...