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7301346 |
Hand lamp, especially for magnetic crack detection
The invention relates to a manual lamp, especially for optical crack testing according to the magnetic powder testing and dye penetration method. Said manual lamp comprises at least one LED having...
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7107863 |
Internal riser inspection system, apparatus and methods of using same
A system for inspecting a pipe weld from within a pipe through use of magnetic particle imaging “MPI” includes an apparatus having a head unit that carries a wire wheel brush for cleaning an...
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7069195 |
Magnetic field gradient coil assembly and method of designing same
A method of designing a small-sized, self-shielding magnetic field gradient coil assembly that is for use in an NMR spectrometer, provides high approximation accuracy, is simple in structure, and...
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6563126 |
Ultraviolet light permeable filter for flaw detection light and method for detection of flaws
An ultraviolet light permeable filter for an ultraviolet detection light is equipped on a filter glass surface with a dielectric multi-film layer which allows a visible radiation of wave length...
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6552536 |
Reference standard for inspection of dual-layered coatings
A reference standard and method for inspecting dual-layered coatings. The reference standard has a first layer adherent to a substrate, the first layer has a predetermined thickness that increases...
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6424150 |
Magnetostrictive sensor rail inspection system
A method and apparatus is shown for implementing magnetostrictive sensor techniques for the nondestructive evaluation of railroad rails. The system includes magnetostrictive sensors specifically...
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6246235 |
Tubular products inspection
An inspection station and process for pipe or other ferromagnetic articles utilizes a generally straight flux field amplifier made of a multi-stranded cable surrounded by non-conducting resin, for...
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5534775 |
Method and apparatus for noncontact magnetic particle stray magnetic flux testing of cylindrical members
A plurality of magnetic field members are provided, each for selectively generating a time-varying magnetic field for combination into a o time-varying composite longitudinal magnetic field with...
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5311126 |
Magnetic field strength threshold indicator for use in a magnetic particle inspection device
Field strength of an electromagnet is monitored at a threshold with a coupling coil positioned to monitor magnetic flux in a leg of an electromagnet. In the context of magnetic particle inspection...
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5189491 |
Method of measuring track displacement on a magnetic tape
A method and an apparatus for obtaining a displacement condition of a track in a longitudinal direction thereof on a magnetic tape on which a periodic signal is recorded by detecting a signal...
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5122743 |
Apparatus and method of non-destructively testing ferromagnetic materials including flux density measurement and ambient field cancellation
Apparatus for measuring flux density within the surface of a ferromagnetic material (24) includes a probe (10) having an end for location on or adjacent the surface of the material (24), a first...
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5055783 |
Magnetic field strength indicator for use prior to a magnetic particle inspection procedure
A field strength indicator for a magnetic particle inspection process is used to determine field strength and direction sufficient to identify real flaws in a test piece. The field strength...
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5053702 |
Apparatus for magnetic particle inspection with an adjustable cable for magnetizing inspection areas of variable dimensions
A magnetic particle inspection system includes apparatus for applying a magnetic field to an inspection area of a metal structure. This apparatus comprises a power cable arranged in at least one...
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5043662 |
Method and apparatus for producing a uniform magnetic field in a test sample
An apparatus for producing a uniform magnetic field in a test sample having an angled end during a magnetic particle test procedure, includes a conductive, angled fixture having a contact surface...
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4992732 |
Method and apparatus for magnetic testing of metallic work pieces
Method and apparatus for inspecting weld seams by means of particles of magnetizable material which align themselves in a magnetic field in a manner characteristic of faults the particles are...
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4950989 |
Magnetizing head construction and related method
A flux scanner head generates a unidirectional magnetic field external to the head adjacent a scanning surface thereof. Workpieces to be subjected to magnetic particle inspection may be...
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4931731 |
Magnetic particle inspection apparatus with enhanced uniformity of magnetization
A ferrous metal inspection device particularly for elongated parts provides high intensity DC magnetic fields in each of two modes contemporaneously. One mode is generated by passing a DC current...
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4888745 |
Apparatus for marking individual points of an underwater construction
For marking and finding weld seams to be investigated under water ultrasonic transmitters 54 are provided which have luminous or light-reflecting characters 58. The diver brings an ultrasonic...
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4859943 |
Inspection method using magnetic particles in a liquid carrier in combination with electrical detection means
A method for inspecting the surface of a workpiece for the presence of flaws using a ferrofluid as a penetrant which is applied to the surface of the workpiece and then scanning the surface of the...
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4759211 |
Detection of defects on structures
The present invention relates to a method for detecting defects in metal structures and welds, especially under-water structures. The method involves applying to the surface of the suspected area...
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4703263 |
Method for non-destructive testing of a magnetizable workpiece under cold weather conditions using a magnetic particle bath
A dry magnetic particle bath for non-destructive testing of a magnetizable workpiece to detect flaws comprising magnetic particles, a modified dextrose adhesive, and a carrier powder. In certain...
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4694247 |
Method and apparatus including a cushion of pulverulent magnetic material for stray field magnetic testing of ferromagnetic parts
Elongated ferromagnetic parts of cylindrical or polygonal cross-sectional outline are tested while rotating about their axes and while advancing longitudinally along a cushion of dry pulverulent...
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4668916 |
Liquid crystal non-destructive inspection of non-ferrous metals
A non-destructive inspection arrangement for ferrous and non-ferrous metallic workpieces. The inspection arrangement employs a liquid crystal indicator medium and electrical current flow through...
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4631688 |
Method of and apparatus for testing a metal body by means of eddy currents
A metal body is inspected for defects by relatively longitudinally displacing it and a plurality of pairs of coils connected in respective bridge circuits that are excited with alternating current....
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4482865 |
Apparatus for the automatic inducement of a magnetic field in an elongated article under test
An automatic overhead trolley-driven magnetizing system for inducing a residual magnetic field in seamless steel pipe in order to detect non-visual defects therein by the magnetic particle...
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4443759 |
Magnetizing current supply for magnetic particle inspection with SCR's connected to three-phase secondary windings for rectification and control
Magnetizing current supplies are disclosed for supplying current for magnetizing parts in a magnetic particle inspection system, including SCR's connected in circuit with a three-phase voltage...
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4433289 |
Method for inspecting steel billets with a dry mixture of magnetic particles and a water soluble carrier solid
A method and composition for non-destructive testing of magnetizable workpieces such as steel billets. A dry dispersion of ferromagnetic particles in combination with a fluorescent pigment and a...
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4388593 |
Coil device for underwater magnetic testing
A coil device for use by divers in subjecting an elongate underwater strure member to a magnetic field for inspection purposes includes a framework supporting a winding having first and second...
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4361806 |
Method using aqueous emulsion having magnetizable particles for detecting flaws in magnetizable workpieces
Method and composition for non-destructive testing of a magnetizable workpiece wherein the surface of the workpiece is treated with an aqueous emulsion of a waxy solid having fluorescent...
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4341997 |
Magnetic particle inspection process useable with simultaneous illumination by ultra-violet and white light
A method and composition for non-destructive testing of a magnetizable workpiece in which the surface of the workpiece is coated with a composition containing discrete magnetic particles consisting...
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4338566 |
Magnetic particle method using water soluble adhesive for detecting flaws in magnetizable workpieces
Method and composition for detecting flaws in a magnetizable workpiece such as a steel billet in which the workpiece is first heated to a temperature of at least 140° F. (60° C.) in a hot water...
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4321534 |
Magnetic particle testing procedure involving pre-coating with a hydrophobic coating
A method for testing a magnetizable workpiece for flaws by the magnetic particle inspection method wherein a coating of finely divided, hydrophobic particles is electrostatically applied onto the...
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4290016 |
Method and apparatus for establishing magnetization levels for magnetic particle testing or the like
A method and apparatus are provided which are based upon a discovery that regardless of the type of ferromagnetic material of a part and its shape, there is a certain direct, uniform and constant...
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4219772 |
Apparatus for nondestructive testing of small blind bores utilizing the dry magnetic particle method
A pair of electrical prods along with a powder supply gun are incorporated in a single portable frame member which is easily insertable into a relatively small blind bore; prod tension against the...
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4172315 |
Method of manufacturing a magnetic field sensitivity indicator apparatus for evaluating magnetic fields in parts during magnetic particle inspection
The method of manufacture and use of a magnetic field sensitivity indicator apparatus for evaluating magnetic fields applied to ferromagnetic material parts during magnetic particle inspection...
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4130800 |
Magnetic particle test system using movable test piece clamping means movable jointly or independently
The present invention relates to an installation for showing up faulty areas on the surface of a bar-shaped, magnetizable workpiece. The installation comprises a feed station and delivery station...
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4121157 |
Castable magnetic particle flaw detection composition and method using constituents that are non-volatile and resistant to oxidation below 100° F and having a viscosity less than 12,000 centipoises
A method for forming and preserving a permanent record of inspections of workpieces or the like having drilled holes or other metallic surface conformations characterized by applying a castable,...
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4058762 |
Method and apparatus for magnetic inspection through adjustable pulsed alternating and direct current magnetic fields
An illustrative embodiment of the invention provides a method and apparatus for magnetic inspection of areas of interest in ferromagnetic material by means of both alternating and direct current...
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3978398 |
Method for nondestructive magnetic inspection of an object employing a putty-like magnetic recording medium
A method for nondestructive magnetic particle inspection of an object or part, especially parts having complex configurations, for detection of defects and metallurgical conditions therein, by...
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3961244 |
Magnetizing means for a magnetic flaw detector including a charging and discharging circuit
This invention concerns a method for magnetically detecting flaws in a magnetisable object, comprising charging at least one storage capacitor from a D.C. power source, generating magnetic flux in...
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3956694 |
Test table for magnetic particle flaw detection
A table top, table frame and tank combination. The table top has a flat topped surface made of a rectangular steel plate. Insulating bars are supported on the table top and extend radially from the...
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3897990 |
Apparatus for inspection of ferro-magnetic billets
An apparatus for the detection of hairline cracks in ferro-magnetic billets is disclosed. Alternating current is used to heat the surface of the billet whereby magnetic powder on the surface of the...
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3876932 |
Omnidirectional magnetic particle flaw detecting apparatus
An omnidirectional magnetic particle flaw detecting apparatus is disclosed. The apparatus includes two sets of magnetizing coils crossed in such a manner that an elliptical rotating magnetic field...
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3862047 |
METHOD AND COMPOSITION FOR DETECTING FLAWS IN METALLIC SURFACES, HOLES AND OTHERWISE
A procedure for examining and inspecting drilled holes or other metal surface conformations by applying a castable, two component, magnetically active material comprised of room temperature...
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3855530 |
MAGNETIC METAL DEFECT-DETECTING APPARATUS
A magnetic metal defect-detecting apparatus comprising a cross-shaped magnetic core assembly prepared from two pairs of magnetic pole members providing two pairs of magnetic poles intersecting each...
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3855526 |
METHOD OF MAGNETIC PARTICLE TESTING USING STRIPPABLE COATINGS
Method for nondestructive magnetic inspection of an object for detecting defects and discontinuities in a surface thereof, by applying a coating, preferably an organic coating, containing a...
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3825821 |
MAGNETIC PARTICLE FLAW DETECTOR USING AN ELECTRON BEAM SCANNER TO GENERATE PULSES REPRESENTATIVE OF THE IMAGE OF THE FLOW PROJECTED ON THE SCANNER SCREEN
In testing ferromagnetic bodies for surface defects by magnetic powder techniques, an image of a magnetized test body treated with magnetic powder is formed on the screen of an electron beam...
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3786346 |
METHOD FOR DETECTING DEFECTS USING MAGNETIC PARTICLES IN A VISCOUS FLUID THAT RESTRICTS THEIR MOBILITY
Method and composition for detecting defects in a magnetizable test piece which involves applying over the surface of the test piece a relatively viscous slurry of ferromagnetic flakes, preferably...
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3763423 |
MAGNETIC PARTICLE FLAW DETECTOR INCLUDING SHIELD MEANS TO PROTECT PREVIOUSLY TESTED SURFACES
A pair of magnetizing plates are located so that a conveyed workpiece will move past the plate cores and flux applied to two lower side surfaces of the workpiece. A magnetic powder material is...
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3668517 |
MAGNETIC PARTICLE INSPECT ON APPARATUS WHEREIN THE ACCUMULATED PARTICLES CLOSE THE INDICATOR CIRCUIT 19720606
An automatic magnetic particle inspection apparatus for detecting a defect in the workpiece and for signalling the presence of the defect in the workpiece is disclosed. The apparatus has conveying...
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