GB944402A - Method of testing a body for porosity and the like - Google Patents
Method of testing a body for porosity and the likeInfo
- Publication number
- GB944402A GB944402A GB284660A GB284660A GB944402A GB 944402 A GB944402 A GB 944402A GB 284660 A GB284660 A GB 284660A GB 284660 A GB284660 A GB 284660A GB 944402 A GB944402 A GB 944402A
- Authority
- GB
- United Kingdom
- Prior art keywords
- radiation
- testing
- cracks
- pores
- range
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 238000010998 test method Methods 0.000 title abstract 2
- 230000005855 radiation Effects 0.000 abstract 5
- 239000000463 material Substances 0.000 abstract 4
- 239000012530 fluid Substances 0.000 abstract 3
- 238000000034 method Methods 0.000 abstract 3
- 239000011148 porous material Substances 0.000 abstract 3
- 238000012360 testing method Methods 0.000 abstract 3
- 238000005266 casting Methods 0.000 abstract 1
- 230000005520 electrodynamics Effects 0.000 abstract 1
- 238000007654 immersion Methods 0.000 abstract 1
- 230000035515 penetration Effects 0.000 abstract 1
- 239000000523 sample Substances 0.000 abstract 1
- 239000007787 solid Substances 0.000 abstract 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
- G01N15/08—Investigating permeability, pore-volume, or surface area of porous materials
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
- G01M3/04—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point
- G01M3/20—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point using special tracer materials, e.g. dye, fluorescent material, radioactive material
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/84—Systems specially adapted for particular applications
- G01N21/88—Investigating the presence of flaws or contamination
- G01N21/91—Investigating the presence of flaws or contamination using penetration of dyes, e.g. fluorescent ink
Landscapes
- Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Dispersion Chemistry (AREA)
- Analysing Materials By The Use Of Radiation (AREA)
Abstract
944,402. Testing for cracks or pores. CONSOLIDATED ELECTRODYNAMICS CORPORATION. Jan. 26, 1960, No. 2846/60. Heading H5R. [Also in Division G1] In a method of testing a body for cracks or pores the surface of the body is exposed to fluid matter containing radiation-emitting material in such manner as to penetrate said cracks or pores, and subsequently any such radiation emanating from the body is detected by suitable instruments; two types of radiation-emitting material are used together, i.e. a "high-range" radiation, which will penetrate the wall to be tested, and a " low-range " radiation, which will not. Thus the effect of remaining radiation sources on the outer wall may be discounted by a differential observation process. The method is suitable for testing such bodies as evacuated instrument bellows, or a solid casting. The body is exposed to or immersed in the fluid containing the radiant material, penetration taking place by capillary action, the kinetic energy of the molecules, or by an existing or induced pressure differential. Various suitable types of radiation-emitting materials are discussed. After exposure or immersion, the external surface of the body is decontaminated to remove as much as possible of the fluid adhering to the external surface. In the form of apparatus shown in Fig. 5, 10 is the body under test, disposed within a thick lead housing 21. Body 10 is surrounded by two radiationsensitive cups 23, 26, connected to respective counting devices 25, 28, for the respective high and low range radiations. If these are, for example, # and # rays, the detectors 23, 26 may be respectively a scintillation counter and a Geiger tube. In the arrangement of Fig. 6, both high and low range detectors are in the form of concentric spheres 23<SP>1</SP>, 26<SP>1</SP>. Alternative methods of radiation-detecting are by moving a detector probe over the outer surface of the body, or by wrapping a photographic film round the body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB284660A GB944402A (en) | 1960-01-26 | 1960-01-26 | Method of testing a body for porosity and the like |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB284660A GB944402A (en) | 1960-01-26 | 1960-01-26 | Method of testing a body for porosity and the like |
| GB741862A GB992972A (en) | 1962-02-26 | 1962-02-26 | Method for testing the penetration of matter into bodies |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB944402A true GB944402A (en) | 1963-12-11 |
Family
ID=26237783
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB284660A Expired GB944402A (en) | 1960-01-26 | 1960-01-26 | Method of testing a body for porosity and the like |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB944402A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3548636A (en) * | 1968-09-30 | 1970-12-22 | Nasa | Method for detecting leaks in hermetically sealed containers |
| DE3823220A1 (en) * | 1988-07-08 | 1990-01-11 | Boris V Dipl Ing Drachenfels | Method for the location of hollow spaces or the like in concrete structures and concrete prefabrications, especially in prestressed concrete structures |
| GB2548710B (en) * | 2016-03-06 | 2018-12-26 | Boeing Co | Radiographic method and apparatus for detection of cracks, defects, or leak pathways in materials and assemblies |
| RU2777165C1 (en) * | 2021-09-10 | 2022-08-01 | Вячеслав Владимирович Антюфеев | Installation for detecting leaks of process fluids |
-
1960
- 1960-01-26 GB GB284660A patent/GB944402A/en not_active Expired
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3548636A (en) * | 1968-09-30 | 1970-12-22 | Nasa | Method for detecting leaks in hermetically sealed containers |
| DE3823220A1 (en) * | 1988-07-08 | 1990-01-11 | Boris V Dipl Ing Drachenfels | Method for the location of hollow spaces or the like in concrete structures and concrete prefabrications, especially in prestressed concrete structures |
| GB2548710B (en) * | 2016-03-06 | 2018-12-26 | Boeing Co | Radiographic method and apparatus for detection of cracks, defects, or leak pathways in materials and assemblies |
| RU2777165C1 (en) * | 2021-09-10 | 2022-08-01 | Вячеслав Владимирович Антюфеев | Installation for detecting leaks of process fluids |
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