Articles Posted in the " Theory of Machines " Category

  • BELT DRIVE AND FLAT BELT

    BELT DRIVE AND FLAT BELT

     BELT DRIVE AND FLAT BELT BELT DRIVE Belt drive consists of two pulleys and a belt. It is in the form of a closed loop. It is used to transmit power from the motor to the machine shaft Or from the engine to the machine shaft or from turbine to generator. Normally motors are high […]


  • BELT DRIVE

    BELT DRIVE

    BELT DRIVE BELT DRIVE Belt is a closed loop of a flexible material. It efficiently transmits power from motor shaft (or engine shaft) to a parallel machine shaft.  Power transmission is a very old mechanism. A belt drive transmits power by friction between the belt and the driving pulley and friction between the belt and […]




  • Fatigue

    Fatigue

       Fatigue  NOTABLE FATIGUE FAILURES   1.       Versailles train disaster 2.      The 1862Hartley Colliery Disaster 3.       De Havilland Comet crash 4.       Alexander L. Kielland oil platform capsizing 5.       The 1919 Great Molasses Flood, the 1948 Northwest Airlines Flight 421 crash, the 1957 of Philippine President aircraft crash, the        […]



  • BALANCING AND UNBALANCING–Introduction

    BALANCING AND UNBALANCING–Introduction

    BALANCING AND UNBALANCING FORCES There are many different forces like contact force, gravity force, inertia force, wind force, fluid pressure force, static force, thermal force, centrifugal , frictional force, pushing force, pulling force, seismic force, snow force, normal force, tangential force etc. Without a force no action like dancing, cycling, playing sports. Even a stationary […]



  • THEORY OF MACHINES: HIGHLIGHTS OF THEORY OF MACHINES

    THEORY OF MACHINES: HIGHLIGHTS OF THEORY OF MACHINES

    THEORY OF MACHINES: HIGHLIGHTS OF THEORY OF MACHINES Lower pairs have line contact. Higher pairs have point contact or sliding contact. Rolling pairs have surface contact. Link is a resistant body which has relative motion but does not affect motion of other members (pendulum has one degree of freedom as θ). Piston and piston rod […]


  • GEARS: INTERVIEW SHORT QUESTION ANSWERS

    GEARS: INTERVIEW SHORT QUESTION ANSWERS

    GEARS: INTERVIEW SHORT QUESTION ANSWERS   Discuss the advantages and disadvantages of an involutes profile. A. Advantages of involutes profile Manufacturing is accurate and easy. Pressure angle is constant Velocity ratio remains the same by the change of center distance.   Disadvantages of involutes profile (i) There is interference (ii)There are vibrations. (iii) There is […]