公开(公告)号：DE3049628A1

公开(公告)日：1982-07-22

申请号：DE3049628

申请日：1980-12-31

Applicant: BASF AG

Inventor： DRESSEL MANFRED DIPL ING ,  GREVEN JOHANNES ,  JECK ARNULF DIPL ING ,  MAGIN RUDOLF DIPL ING DR ,  NICK GUENTHER ,  SCHAFFARCZYK PAUL ,  WEISS GUENTHER DIPL-CHEM DR

IPC: G01M13/00 ,  G01N19/08 ,  G07C3/08 ,  F04B39/00 ,  F16C3/06

Abstract: For the purpose of monitoring the formation and propagation of cracks in machine parts and components, especially in the rotating shafts of prime movers and mechanical equipment, at least one hole is drilled in the uncracked section of the component, this drilled hole intersecting the plane of the crack which is to be expected and being filled with a gas or a liquid, the gas or liquid being adjusted to a pressure above the ambient pressure, and the drilled hole being provided with a closure with respect to the environment and being connected, via a line, to an instrument for indicating a fall in the pressure of the medium present in the drilled hole.

公开(公告)号：NO814322A

公开(公告)日：1982-07-01

申请号：NO814322

申请日：1981-12-17

Applicant: BASF AG

Inventor： DRESSEL MANFRED ,  GREVEN JOHANNES ,  JECK ARNULF ,  MAGIN RUDOLF ,  NICK GUENTHER ,  SCHAFFARCZYK PAUL ,  WEISS GUENTHER

IPC: G01M13/00 ,  G01N19/08 ,  G07C ,  G01M

CPC classification number: G01M13/00 ,  G01N19/08

公开(公告)号：DE3342463A1

公开(公告)日：1984-05-30

申请号：DE3342463

申请日：1983-11-24

Applicant: BASF AG

Inventor： NICK GUENTHER ,  LIMPERT ROLF

IPC: G01N29/04 ,  G01N29/11

Abstract: In a method of monitoring the development of cracks in machine parts and components, in particular in engine and machine shafts, by irradiation with ultrasonic waves, a hole in which a receiver test head for receiving the ultrasonic waves emitted by a transmitting test head is displaced is made in the crack-free section of the machine part or component. The hole is situated near the crack plane on a side of the latter which is remote from the transmitting test head and it extends to a greater depth than the crack plane and does not intersect the latter.

公开(公告)号：NO814322L

公开(公告)日：1982-07-01

申请号：NO814322

申请日：1981-12-17

Applicant: BASF AG

Inventor： DRESSEL MANFRED ,  GREVEN JOHANNES ,  JECK ARNULF ,  MAGIN RUDOLF ,  NICK GUENTHER ,  SCHAFFARCZYK PAUL ,  WEISS GUENTHER

IPC: G01M13/00 ,  G01N19/08 ,  G07C ,  G01M

Abstract: For the purpose of monitoring the formation and propagation of cracks in machine parts and components, especially in the rotating shafts of prime movers and mechanical equipment, at least one hole is drilled in the uncracked section of the component, this drilled hole intersecting the plane of the crack which is to be expected and being filled with a gas or a liquid, the gas or liquid being adjusted to a pressure above the ambient pressure, and the drilled hole being provided with a closure with respect to the environment and being connected, via a line, to an instrument for indicating a fall in the pressure of the medium present in the drilled hole.