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G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
G01N29/04—Analysing solids
G01N29/07—Analysing solids by measuring propagation velocity or propagation time of acoustic waves
G01N29/075—Analysing solids by measuring propagation velocity or propagation time of acoustic waves by measuring or comparing phase angle
G—PHYSICS
G01—MEASURING; TESTING
G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
G01N29/22—Details, e.g. general constructional or apparatus details
G01N29/24—Probes
G—PHYSICS
G01—MEASURING; TESTING
G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
G01N2291/00—Indexing codes associated with group G01N29/00
G01N2291/04—Wave modes and trajectories
G01N2291/044—Internal reflections (echoes), e.g. on walls or defects
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AT502676A1976-07-081976-07-08Verfahren zur durchfuehrung von untersuchungen mit ultraschall und schallkopf zur durchfuehrung dieses verfahrens
AT353510B
(de)
Verfahren zum zusammenbau und setzen von ausbaurahmen des untertaegigen streckenausbaus sowie vorrichtung und klemmschellen zur durchfuehrung dieses verfahrens
Verfahren zur durchfuehrung von ultraschall- untersuchungen unter verwendung von zwei schwingersystemen und schallkopf zur durch- fuehrung dieses verfahrens