In-process weld geometry methods and systems are discussed, enabled, and provided. Some embodiments include in-process welding devices to compensate for error associated with detected weld penetration depth. Exemplary devices can generally include an ultrasonic energy source, an ultrasonic receiving sensor, and a controller. The ultrasonic energy source can be disposed to generate ultrasonic energy through a first specimen being welded to a second specimen. A weld seam can be used to join the first specimen to the second specimen. The ultrasonic sensor can be disposed on an opposite side of the weld seam from the ultrasonic energy source, and configured to detect ultrasonic energy propagated from the first specimen side of the weld seam to the second specimen side of the weld seam. The controller can be disposed to receive data from the ultrasonic sensor, configured to determine time of flight signal data corresponding to arrival of the ultrasonic energy detected by the ultrasonic sensor, and configured to compare the determined time of flight signal data to a model to compute error associated with the determined time of flight signal data due to a dynamic welding environment. Other aspects, embodiments, and features are claimed and described.

In-process weld geometry methods & systems

An ultrasonic inspection method and ultrasonic inspection apparatus is capable of inspecting a weld line and of detecting a circumferential crack and an axial crack that are present in the weld line. An ultrasonic probe is placed on the surface of a structure and transmits an ultrasonic wave. The ultrasonic wave is transmitted at an angle in an X′-Z plane. The direction of a normal to the surface is defined as an X axis. The direction in which the weld line extends is defined as a Y axis. The direction perpendicular to the X axis and the Y axis is defined as a Z axis. An axis obtained by rotating the X axis around the Z axis is defined as an X′ axis. A control mechanism performs signal processing of signals reflected from the defect or defects to detect the defect or defects and to measure the length of the defect or defects.

Ultrasonic inspection method and ultrasonic inspection apparatus

A bibliography is given containing 1911 references published during 2003 on piezoelectric and pyroelectric properties of materials and their applications. It contains listings of journal articles and patents with complete bibliographic citations. This bibliography is the continuation of a series published semi-annually.

Guide to the Literature of Piezoelectricity and Pyroelectricity. 24

Dispersed penetraters in which oxide particles of several micrometers are dispersed widely and in a thin region can be detected. Specifically, an ultrasonic test device comprises a transmitting/receiving unit which has a transmitting section (6) for transmitting an ultrasonic wave toward the welded surface of the welded part (2) of a tubular object (1) in the axial direction in such a way that a transmitted beam (8) has a beam width lying in the range from 0.5 mm to 2.5 mm and a receiving section (7) for receiving a part or the whole (received wave beam (9)) of the reflected wave at the welded surface, and in which the transmitting section (6) and the receiving section (7) are composed of different vibrator groups on one or more array probes (5) arranged in the circumferential direction of the tubular object.

Ultrasonic flaw detection apparatus and ultrasonic flaw detection method for pipe

A method for checking a weld (1) between a first metal pipeline (2) and a second metal pipeline (4), in particular an austenitic weld, the method comprising at least the following method steps: (a) a first ultrasonic beam (30) is transmitted to an interface (26) between the weld and the first pipeline situated on a first side (28) of the weld; (b) a reflection of the first ultrasonic beam (30) on the interface (26) situated on the first side (28) of the weld is received and a first received signal corresponding thereto is generated; (c) a second ultrasonic beam (40) different from the first ultrasonic beam (30) is transmitted to the interface (26) situated on the first side (28) of the weld; (d) a reflection of the second ultrasonic beam (40) on the interface (26) situated on the first side (28) of the weld is received and a second received signal corresponding thereto is generated; (e) the first received signal and the second received signal are processed in combination for checking the weld (1).

Method for checking a weld between two metal pipelines

The invention concerns a method for non-destructive ultrasonic control, combining time-of-flight diffraction (TOFD) and inclined longitudinal wave techniques, of weld joints assembling two abutted parts. The method consists of using the time-of-flight diffraction technique, displacing in the longitudinal or circumferential direction, along the weld joint to be controlled, at least one pair consisting of a first transducer and of a second transducer, one transmitting and the other receiving ultrasonic waves, these transducers being laterally positioned on either side of the joint to be controlled, these transducers comprising piezoelectric ceramics or crystals. Furthermore, it consists of displacing along the welded joint to be controlled, using the inclined longitudinal wave technique, at least a third transducer, so as to detect any defect of the joint located at a thickness ranging between 0.5 mm and 15 mm.

Method for ultrasonic control of weld joints

The ultrasonic control of weld joints (1) assembling two abutted components (2, 3) consists of displacing, using a time-of-flight diffraction technique, in the longitudinal or circumferential direction along the weld joint at least one couple formed from a first transducer (5) and a second transducer (6), one transmitting and the other receiving ultrasonic waves. The transducers are laterally positioned on either side of the weld joint and comprising piezoelectric ceramics or crystals, in a manner to be able to detect all defects in the joint located at a thickness of at least 5 mm; displacing along the weld joint, using the inclined longitudinal wave technique, at least a third transducer, so as to detect any defect in the joint located at a thickness ranging between 0.5 and 15 mm. An Independent claim is also included for putting this method of ultrasonic control into service.

Olivier Bardoux

Papers

Method for ultrasonic control of weld joints

Ultrasonic control of weld joints combining time-of-flight diffraction and inclined longitudinal wave techniques using at least three transducers