Lesson 1 - Forces and Motion
Topics:
Measuring forces; Describing motion; Acceleration; Types of motion; Newton's Laws of Motion
Learning Objectives:
– Name five ways forces originate.– Explain how forces are measured.
– Define velocity, acceleration, and elastic distortion.
– Define rotary motion and reciprocating motion.
– State and explain Newton's Laws of Motion
Lesson 2 - Work, Energy, and Power
Topics:
Defining and measuring work; Torque; Energy; Law of Conservation of Energy; Kinetic and potential energy; Power; Horsepower; Calories; Btu
Learning Objectives:
– Define work, and explain how to calculate it.– Define the terms torque and prime mover.
– Define energy, and tell how it is measured.
– Differentiate between kinetic and potential energy, and give an example of each one.
– Define power and horsepower, and tell how each is measured.
Lesson 3 - Fluid Mechanics
Topics:
Fluids and forces; Measuring fluid pressure; Velocity head vs static pressure head; Bernoulli effect; Venturi tubes; Friction head; The siphon
Learning Objectives:
– Define a fluid.– Define pressure, and identify common units of pressure measurement.
– State Pascal's Law, and give an example of its application.
– Explain the difference between gage pressure and absolute pressure.
– Explain the Bernoulli Effect, and give three examples of how it is utilized in industry.
– Explain how a siphon works.
Lesson 4 - Simple Machines
Topics:
Levers; Wheel and axle; Gear trains; Inclined planes; Wedges; Cam-and-follower devices; The screw; Pulleys; Mechanical efficiency
Learning Objectives:
– Identify and name six types of simple machines.– Calculate the ideal mechanical advantage of each of six simple machines.
– Describe the action and purpose of cam-and-follower mechanisms.
– Determine the ideal mechanical advantage of several simple gear trains.
– Explain mechanical efficiency and show how to calculate it.
Lesson 5 - Machine Elements
Topics:
Machine motions; Mechanisms; Lever and four-bar linkages; Devices for producing linear motion; Ratchet-and-pawl and fluid-power mechanisms
Learning Objectives:
– List the four classifications of mechanisms.– Name the six basic motion conversions, and give an example of each.
– Explain the functions of bell cranks, Pitman arms, and toggle bars.
– Name three types of four-bar linkages, and explain how they function.
– Describe the ratchet-and-pawl mechanism.
Lesson 6 - Measurement Tools and Instruments
Topics:
Classification of instruments; Measurements in maintenance; Process monitoring and quality assurance; Predictive maintenance
Learning Objectives:
– Define measurement, parameter, accuracy, precision, sensitivity, and range.– Explain why measurements are important to maintenance operations.
– Describe the general features of a portable measurement instrument.
– List the basic measurement instruments most often used in mechanical maintenance, and describe the operating principles of each.
Lesson 7 - The Safe Use of Hand Tools
Topics:
Screwdrivers; Wrenches; Hammers and mallets; Chisels; Punches; Saws; Files and rasps; Snips, nippers, and cutters; Pliers; Organizing tools
Learning Objectives:
– Name the major hand tools used in maintenance.– State criteria for selecting the proper tools for specific jobs.
– Identify safe/unsafe practices in the use of hand tools and explain why they are safe/unsafe.
– Explain how to prolong the useful life of selected hand tools.
– Explain the advantages of having a well-organized tool box.
Lesson 8 - The Safe Use of Portable Power Tools
Topics:
Hazards; Protection against shock; Drills, sanders, grinders, saws, shears, impact wrenches, and rotary hammers; Pneumatic tools
Learning Objectives:
– State three precautions to take before using any power tool.– Describe the safe use of each of the following power tools: electric drills, sanders, grinders, and saws; electric impact tools; pneumatic impact wrenches and hammers.
– State three general guidelines for the safe operation of any portable power tool.
– Describe the potential electrical hazards associated with electric power tools.
Lesson 9 - Fasteners
Topics:
Threaded fasteners; Screw threads; Types of nuts; Washers; Safety wiring; Keys and pins; Rivets
Learning Objectives:
– Identify seven major types of threaded fasteners.– Read and interpret common screw thread and threaded fastener specifications.
– Describe the three actions in a manual riveting operation, and explain why each action must be done properly.
– Demonstrate the proper technique for safety wiring a group of threaded fasteners.
– Identify three kinds of washers.
Lesson 10 - Friction and Wear
Topics:
Nature of friction, its causes and importance; Static and kinetic friction; Measuring friction; Coefficients of friction; Wear; Static electricity
Learning Objectives:
– Define friction, identify the forces that cause it, and describe its effects.– Differentiate between static friction and kinetic friction.
– Define coefficient of friction.
– Calculate the expected friction force between two surfaces, given the normal force and the coefficient of friction.
– Describe four types of wear.
