Mechanical (METROLOGY) 6th Semester Course Outline

Mechanical (METROLOGY) 6^th Semester Course Outline

Bangladesh Polytechnic Institute

Technology: Mechanical

Semester: 6th

Sub. Name: METROLOGY (7064)

Course Outline

Class No.	Discussion and Explanation of Topics/ Titles	Remarks
Class-1	 Understand metrology.  Define metrology.  Mention the objectives of metrology.  Describe different types of inspection techniques.  Relate accuracy and cost of inspection.  Explain the characteristics to be considered in selection of instruments in eliminating errors in measurement
Class-2	Understand metrology.  Explain the effect of temperature and alignment on precision measuring instruments and ISO inspection room temperature.  Describe the general care of measuring instruments and calibration techniques.  Describe use and care of surface plate, angel plate and VBlock
Class-3	Understand non-precision measuring instruments.  Define non-precision measuring instruments.  Describe the construction and uses of straight edge, spirit level, radius gauge, angle gauge, feeler gauge, combination set.  Describe the uses of tool maker’s flat.
Class-4	Describe different types of vernier caliper.  Identify the scales and graduations on the vernier caliper.  Determine the vernier constant of the vernier caliper
Class-5	Understand precision measuring instruments.  Mention the common uses for vernier instruments.  Explain the working principle of vernier height gauge, vernier bevel protractor, vernier depth gage, gear tooth vernier and dial gage.
Class-6	Feedback
Class-7	Feedback
Class-8	 Understand precision measuring instruments.  Define micrometer.  Identify the different parts of a micrometer.  Explain the working principle of outside, inside, depth, screw, pipe, vernier, bench, digital and dial micrometers.
Class-9	Mention the uses of gauge and Taylor’s principles of gage.  Describe the construction of slip, telescopic, hole, plug, ring, snap and length gauges.  Mention the uses of slip, telescopic, hole, plug, ring, snap and length gauges.
Class-10	Understand the angular measuring instruments  Mention the uses of angle gauge, protractor, vernier bevel protractor and sine bar.  Explain the principle of sine bar.  Calculate the angles by using slip gauges and sine bar .
Class-11	Feedback
Class-12	Feedback
Class-13
Class-14	Understand the angular measuring instruments.  Describe the procedure of using sine bar, sine center and sine table.  Calculate angles of dovetail groove, V-groove and tapered hole.  Calculate the size of dovetail groove, V-groove and tapered hole.
Class-15	Understand the optical instruments used in surface inspection.  Describe the procedure of checking flatness by using optical flat.  Describe the procedure of cheeking flatness by using a monochromatic light source.  Describe the procedure of checking flatness by interferometer,
Class-16	Understand the optical instruments used in surface inspection.  Mention the uses of an auto-collimator or alignment telescope.  Describe the working principle of auto-collimator.  Explain the construction of an optical comparator.  Describe the working principle of an optical comparator
Class-17	Understand the importance of limits, fits and tolerances of mating parts.  Explain the ISO system of limits and fits.  Solve problems related to limit, fits, clearance, allowance etc.
Class-18	Understand surface inspection and measurement.  Explain types of surface texture produced by various machine tools.  Define roughness, waviness, flaws and lay and ISO method of indicating surface finish
Class-19	Understand surface inspection and measurement.  Describe the surface inspection by comparison method.  Describe the surface inspection by direct measuring methods using macro-interferometer, profilometer and diamond stylus analyser
Class-20	Feedback
Class-21	Class test-1
Class-22	Understand the importance of checking accuracy of machine tools.  Identify the need for correct alignment.  Explain the accuracy checking procedure of lathe, drill, milling machine.  Describe the accuracy of checking procedure of shaper and grinding machines.
Class-23	Understand the non-destructive tests.  Define non-destructive test.  Describe the methods of non-destructive test.  Describe the procedure of magnetic particle inspection
Class-24	Understand the non-destructive tests.  Describe the inspection process of engineering parts by xray.  Describe the inspection procedure of engineering parts performed by radiography.  Describe the procedure of ultrasonic inspection.
Class-25	Understand the measuring method of different types of screw thread.  Explain the methods used in screw thread measurement with micrometer.  Explain the methods used in screw thread measurement with Prism  Determine effective diameter of a screw with two/three wires method.
Class-26	Understand the quality control.  Explain the necessity of quality control in engineering production.  Describe the statistical method of quality control.  Describe sample inspection.
Class-27	Understand the quality control.  Describe different types of sampling.  Describe average control chart and deviation control chart.  Describe acceptance of sampling.
Class-28	Understand the recent trends in engineering metrology.  Identify recent trends in metrology by using electro-optical inspection and LASER (light amplification of stimulated emission & radiation) technology.  Mention the uses of electro-optical inspection
Class-29	Understand the recent trends in engineering metrology.  Describe the advantages of laser telemetric system.  Explain the working principle of laser and LEP based distance measuring instruments
Class-30	Feedback
Class-31	Feedback
Class-32	Feedback
Class-33	Class test-2