Metrology & Quality Control for PC

Metrology & Quality Control is a subject of mechanical engineering, Metrology is the science of measurement. Metrology includes all theoretical and practical aspects of measurement. The App covers the subject in detail.

The app is a handbook covering lecture notes, Video tutorials,Model Answers, definitions, concepts, diagrams, formulas, theory, laws, tools, equations, calculations,graphs on the subject. The App covers the topic in a flashcard like format, purpose of the App is faster learning and revisions of the subject.

It covers more than 120 topics of Metrology & Quality Control in detail. The topics are divided in 7 units.
Some of topics Covered in this application are:

1. Categories of metrology
2. Industrial metrology, Legal metrology
3. Inspection & its Need
4. Precision & Accuracy
5. Sensitivity, Readability, Calibration, Traceability, Reproducibility
6. Error,Sources of errors
7. Selection of instrument
8. Concept of least count of measuring instruments
9. Standards and Comparators
10. line standard,end standard, Wavelength standard and their comparison
11. Slip gauge and its accessories.
12. Requirement of good comparator, Classification, use of comparators.
13. Working principle of comparators, Dial indicator, Sigma comparator, Pneumatic comparator, Electrical (LVDT).
14. Limits
15. Fits
16. Tolerances and Gauges
17. To understand various types of gauges and their applicability.
18. Hole And Shaft Basis System, Taylor’s Principle
19. Design of Plug, Ring Gauges
20. Angular Measurement
21. Working And Use of Universal Bevel Protractor
22. Sine Bar
23. Spirit Level, Principle of Working of Clinometers
24. Angle Gauges
25. Angle dekkor as an angular comparator
26. Threads and Gear Metrology
27. Various methods of calculating thread elements and elements of gear tooth
28. Screw thread Measurements
29. Errors in threads
30. Measurement of different elements such as major diameter, minor diameter, effective diameter, pitch for internal and external threads
31. Three wire method
32. Thread gauge
33. screw thread micrometer
34. Working principle of floating carriage micrometer
35. Gear Measurement & Testing
36. Measurement of tooth thickness by constant chord method, base tangent method, gear tooth vernier
37. Errors in gears such as backlash,run out,composite,concentricity
38. Parkinson gear tester
39. Testing Techniques
40. terminology of surface finish & measure the surface finish of various components.
41. Measurement of Surface Finish
42. Primary and secondary texture
43. Sampling length, Lay,direction of lay, Sources of lay and its significance
44. CLA, Ra, RMS values
45. Symbol for designating surface finish on drawing
46. Machine Tool Testing
47. Parallelism, Straightness, Squareness, Coaxiallity, roundness, run out.
48. alignment testing of machine tools such as lathe, milling machine and drilling machine as per IS standard procedure
49. Study of optical flat for flatness testing
50. Quality Control
51. the concept of Quality
52. cost of quality
53. meaning of quality of product & services
54. Quality characteristics
55. Quality of design,Quality of conformance,Quality of performance
56. Concept of reliability
57. Quality assurance
58. Quality & Inspection, Inspection stages
59. Total Quality Management
60. Principles and concept of total quantity management
61. Quality Audit: Concept of audit practices, lead assessor certification
62. Six sigma: Statistical meaning, methodology of system Improvement
63. Introduction of ISO 9001-2008.ISO-14000 and TS 16949
64. Statistical Quality Control
65. Basics of Statistical concepts, Meaning and importance of SQC
66. Variable and attribute Measurement
67. control charts – inherent and assignable sources of variation
68. control charts for variables – X & R charts, control charts for attributes p,np,C charts
69. process capability of machine
70. Acceptance Sampling
71. Different types of sampling plans,acceptance sampling
72. OC Curve

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