Abstract: Provided are a processing device, a detecting system, a processing method, a program, and a storage medium that obtain a position of a weld portion of a joined body with higher accuracy. A processing device according to an embodiment receives intensity data of a reflected wave obtained by transmitting an ultrasonic wave along a first direction toward a joined body. The device designates a weld portion of the joined body by using the intensity data. The device calculates a first center position of the weld portion in a first plane crossing the first direction.

Abstract: A shape determining device includes first and second homodyne interferometers respectively provided for front and back surfaces of an object to be measured and a thickness distribution calculator that calculates a thickness distribution of the object based on intensities of first and second interference light beams respectively detected by the first and second homodyne interferometers for the front and back surfaces of the object at a plurality of measurement sites. The thickness distribution calculator calculates, for each interference light beam for which the intensity is detected by the first and second homodyne interferometers, a phase difference between the polarization components of a corresponding reference light beam and a corresponding object light beam in a corresponding non-interference light beam based on the intensity of the interference light beam, and calculates the thickness distribution based on a distribution of the calculated phase differences.

Abstract: An object of the present invention is to measure thickness distribution with precision by using a simple device configuration without being affected by vibrations of a to-be-measured object. In the present invention, for each of the front and the back surfaces of a to-be-measured object 1, each of light beams obtained by branching into two an emitted light beam from a laser light source 2 is further branched into two. Then, the light beams are reflected in reference surfaces and measurement points 1a and 1b mutually in a front and back relation, so that non-interference light beams Pax and Pbx each of which contains the reference light beam and the object light beam as mutually orthogonal polarization components are acquired. Then, each light beam is branched into a plurality. Onto one or more of the branched light beams, phase shift is performed in which a change is imparted to the phase difference between the orthogonal polarization components by using wavelength plates a261, a263, and a264 and the like.

Abstract: In a rolling bearing having a rolling bearing ring and a rolling element of at least 20 mm in diameter, at least one of the rolling bearing ring and the rolling element consists of carburized or carbonitrided steel containing at least 0.2 wt % and not more than 0.35 wt % of carbon and at least 2.2 wt % and not more than 3.6 wt % of Ni. Thus obtained is a rolling bearing capable of reducing the material cost and increasing the fatigue life or reducing the carburizing time by ensuring surface hardness and optimizing the case depth.

Abstract: In a rolling bearing having a rolling bearing ring and a rolling element of at least 20 mm in diameter, at least one of the rolling bearing ring and the rolling element consists of carburized or carbonitrided steel containing at least 0.2 wt % and not more than 0.35 wt % of carbon and at least 2.2 wt % and not more than 3.6 wt % of Ni. Thus obtained is a rolling bearing capable of reducing the material cost and increasing the fatigue life or reducing the carburizing time by ensuring surface hardness and optimizing the case depth.

Abstract: A method of conducting circumferential welding on electric welded steel pipes to form a continuous line pipe to be laid on the sea bottom by a reel barge method. The formation of the final welding layer is executed with a welding material having a strength which is 5 kg/mm.sup.2 or more lower than that of the welding material used for forming the welding layers underlying the final layer. Preferably, the reinforcement of weld is formed to meet the conditions of:2 mm.ltoreq.radius of curvature at the toe of weld120.degree..ltoreq.angle of toe of weld0.8 mm.ltoreq.height of reinforcement of weld.ltoreq.1.8 mmPreferably, the electric welded pipes as the base metal has the composition: containing C: 0.03 to 0.20 wt %; Mn: 0.50 to 1.5 wt %; Si: 0.05 to 0.50 wt %; Al: 0.005 to 0.060 wt %; Nb, V and Ti in total: not greater than 0.040 wt %; and the balance substantially Fe and incidental impurities, Preferably, the carbon equivalent Ceq and the weld cracking sensitivity Pcm, satisfy the following conditions of:0.20.