Home └Liquid Penetrant Course └OOGA - FPI - 1 - INTRODUCTION

Liquid Penetrant Course

0 %

Completed

Course content

OOGA - FPI - 1 - INTRODUCTION

10 XP
Prev Next
Fullscreen Share
INTRODUCTION FPI
Rating
0 0

There are no comments for now.

1. NDT inspection methods are used to minimize wasted manpower during manufacturing as well as reduce in -service component failures.
True False
2. The selection of one method over another is usually the decision of the Level 2 technician performing the test.
True False
3. A Level 1 technician performing a Liquid Penetrant Test, is permitted to perform specific tests and calibrations.
True False
4. All three (3) Levels of NDT technicians must take a General, Specific, and Vision Acuity Examination to be certified in accordance with NAS410 guidelines.
True False
5. According to NAS410, a Liquid Penetrant Level 1 technician should have three (3) months hands-on experience in the method, and a minimum of twenty (20) hours of classroom training to qualify for Level 2 certification testing.
True False
6. An NDT Certification is good for the entire time of the technician's employment with the certifying company.
True False
7. The Liquid Penetrant inspector requires a total of 400 hours of experience to be qualified to a Level 2 in accordance with NAS410.
True False
8. The responsibility of issuing a certification to the NDT technician is always given to the employer if NAS410 or SNT-TC-1A documents are the be complied with.
True False
9. The Level 1 or Level 2 inspector is normally certified for a period of five (5) years.
True False
10. Liquid Penetrant testing is always the preferred testing method on stainless steel materials.
True False
11. Magnetic Particle Testing can detect surface and slightly subsurface defects.
True False
12. Liquid Penetrant Testing is not necessary when Radiography is being used as the primary NDT method.
True False
13. Magnetic Particle Testing is more sensitive to detection of surface defects in ferrous steel than the Liquid Penetrant Method.
True False
14. Liquid Penetrant is always the best choice for the detection of surface defects.
True False
15. When doing a liquid penetrant test, the material of the specimen has little effect on the accuracy of the test.
True False
16. "Type I (one)" penetrants are those containing fluorescent dyes.
True False
17. Because of capillary action, penetrant testing works well on parts with very porous surfaces.
True False
18. Liquid penetrant inspection can only be used on metals such as aluminum and steel.
True False
19. The penetrant inspection method is only used on the finished product for final acceptance.
True False
20. Two (2) degrees º is a good contact angle for an effective liquid penetrant.
True False
21. Surface Tension is dependent upon the adhesive and cohesive properties of the penetrant and the surface condition of the test mateiral.
True False
22. The first important step in penetrant testing is Surface Preperation
True False
23. The most common method of surface preparation for penetrant testing is sand blasting.
True False
24. Some discontinuities that are totally subsurface can be located with high sensitive "method B" fluorescent penetrants.
True False
25. Water Washable penetrant is considered the least sensitive of all fluorescent penetrants.
True False
26. The document ASTM E1417/E1417M is the document which presently governs penetrant testing for production inspection of aerospace components.
True False
27. To be detected with penetrant testing, the defect should be open to the surface.
True False
28. The precleaning step should be accompanied with a pre-visual inspection of the test surface to determine if there are any gross discontinuities present or areas of interest..
True False
29. It is considered advantageous for a liquid penetrant to have low viscosity, good wettability, low surface tension and a low contact angle.
True False
30. Liquid penetrant testing can be used on hot and cold surfaces without any effect on the test results.
True False
31. Liquid penetrants can be categorized by the dye they contain and the method of excess penetrant removal.
True False
32. MIL-STD-6866 supersedes ASTM E1417/E1417M
True False
33. A contaminant would be considered any foreign material on the surface of the test piece.
True False
34. AMS-2644 and QPL-AMS-3644 are considered sister documents.
True False
35. A high ambient temperature will cause the penetrant to thicken.
True False
36. With penetrant inspection, one can accurately determine the depth of a discontinuity.
True False The depth of an indication cannot be determined, however the larger the bleed out the deeper it may be suspected to be relative to size viewed under white light.
37. Chemical means is the secondary choice for precleaning a part before inspection.
True False
38. The viscosity of the penetrant determines what makes a good penetrant.
True False
39. The original penetrant technique was called the "oil and whiting" method.
True False
40. Carl Betz of Magnaflux is considered the inventor of the liquid penetrant method.
True False
41. Fluorescent penetrant inspection was invented before visible dye penetrant inspection.
True False
42. Personnel at Magnaflux invented the post-emulsified penetrant process.
True False
43. Which of the following can be tested by the liquid penetrant testing (PT) method?
Iron Castings, Aluminum Forgings and a part made from non-porous material. Unglazed ceramics, iron castings, and aluminum forgings. Iron castings, aluminum forgings, and oxidized fiberglass. Concrete and clary structures.
44. A red discontinuity indication against a white background is found in which penetrant method classification?
Type II, Method A, Form a Type I, Method C, Form d Type III, Method A, Form b Type II, Method D, Form c
45. Which of the following PT Techniques is generally used for portable field inspections?
Water-Washable Fluorescent Penetrant Lipophilic Poste-Emuslifiable Flourescent Penetrant Solvent-Removable Visible Penetrant Solvent-Removable Fluorescent Penetrant
46. Which of the following penetrants can be used when inspection must take place under ordinary lighting conditions?
Visible Dye Penetrant Water-WashableFlourescent Penetrant Post-Emulisification Flourescent Penetrant Ultraviolet Penetrants
47. A fluorescent penetrant, solvent-removeable process using a non-aqueous developer is classified as:
Type II, Method C, Form d Tyle I, Method A, Form a Type I, Method C, Form d Type II, Method D, Form b
48. A good penetrant must:
Be able to readily penetrate very fine openings. Evaporate very rapidly. Be able to find its way into openings that have been shot-peened shut. Remain on the surface after testing as a protective coating.
49. Which of the following is the most widely used color for dyes in visible penetrants?
Yellow Red Black White
50. A good commercial penetrant should have what type of Flash Point?
Low High Medium Flash Point is not to be considered.
51. Liquid Penetrant examination can detect which of the following types of discontinuities?
Inclusion Slag A Crack open to the surface Subsurface Porosity
52. Which of the following processes would be most sensitive to detecting very fine discontinuities?
Oil and Whiting process Water-Washable process Post-Emulsification process Water-Emulsifiable visible dye penetrant process
53. The viscosity of liquid penetrants increases as
temperature of the penetrant decreases temperature of the penetrant increases temperature of the part decreases
54. Which of the items listed below is an advantage of using the PT method?
It is the most sensitive NDT method for detecting surface discontinues. There is no risk that penetrants, emulsifiers, and solvents will irritate human skin. Operations such as peening or brushing will not interfere with penetrant performance. It's ability to enter porous nonmetallic objects.
55. Which of the following physical properties, more than any other, determines what makes a material a good penetrant?
Viscosity. Surface Tension. Wetting Ability. No one single property determines whether a material will be a good penetrant.
56. The speed with which a penetrant penetrates a surface discontinuity is influenced to the greatest extent by which of the following properties?
Capillary Action Surface Tension and Wettability Viscosity Density
57. Which of the following types of discontinuities cannot be detected by PT?
Surface Laminations Internal Forging Bursts Surface Cracks Surface Laps
58. Which of the following discontinuities would be impossible to detect with PT?
A Forging Lap A Crater Crack Grinding Cracks Nonmetallic Internal Inclusions
59. Which statement(s) apply to the PT Method?
PT is less flexable than eddy current testing. PT is less reliable than the magnetic particle method for finding surface discontinuities in ferromagnetic materials. PT will not detect fatigue cracks. PT is more reliable than radiographic testing when attempting to detect minute surface discontinuities.
60. The attraction of dissimilar molecules is known as:
Cohesion Adhesion Tension Wetting Ability, or Wetability.
61. The excess penetrant removal process is classified by method. What is Method A?
Water-Washable Post-Emulsifiable, Lipophilic Solvent-Removeable Post-Emulsifiable, Hydrophilic