Abstract: The purpose of the present invention is to provide a method for improving fatigue strength that is capable of improving the fatigue strength of cast iron, specifically spherical graphite cast iron, to the same level as that of carbon steel subjected 10 carburizing and quenching. To this end, this method contains a step for performing first, second and third shot peenings using shot of a prescribed diameter for each on spherical graphite cast iron on which a normalizing heat treatment has been performed at 800-950° C. and tensile strength made to be 850 MPa or more, the spherical graphite cast iron containing the following elements in the following mass percentages: C=2.0-4.0%, Si=1.5-4.5%, Mn=2.0% or less, P=0.08% or less, 8=0.03% or less, Mg=0.02-0.1%, and Cu=1.8-4.0%.

Abstract: An obstacle deflector provided at a front portion of an underframe of a carbody of a railcar includes an obstacle deflecting plate configured to protect the carbody from an obstacle on a railway track when the railcar is traveling. The obstacle deflecting plate includes a main plate portion provided to receive the obstacle by a surface thereof and having a curved shape that is convex toward a front side in a traveling direction in plan view and a sub plate portion projecting toward a rear side from the main plate portion and is continuously provided along the main plate portion so as to extend from a convex, curved front end portion of the main plate portion toward a pair of left and right side portions of the main plate portion, the left and right side portions being located at the rear side in the traveling direction.

Abstract: A crash energy absorber is provided at a front portion of a carbody of a railcar and configured to crush by a load from a front side to absorb crash energy. The crash energy absorber includes: a main absorbing portion extending in a front-rear direction; and a pair of sub absorbing portions respectively provided at upper and lower sides of the main absorbing portion. Each of the pair of sub absorbing portions is formed integrally with the main absorbing portion via breakable portions each extending in the front-rear direction.

Abstract: An underframe structure of a railcar capable of reducing a deformation amount of a cross beam supporting an underfloor equipment upon underfloor fire. The underframe structure of the railcar includes an underframe having a pair of side sills extending in a railcar longitudinal direction and a cross beam arranged between the side sills and extending in a railcar width direction, a structural floor provided on an upper surface of the underframe, and an underfloor equipment suspended down in a center part in the railcar width direction of the cross beam. The underframe structure includes a passenger cabin floor provided on an upper side of the structural floor, the passenger cabin floor forming a lower surface of a passenger cabin S, and floor receiving members supporting the passenger cabin floor and extending in the railcar longitudinal direction between the structural floor and the passenger cabin floor.

Abstract: Provided is a floor structure of a railcar in which thickness of a heat insulating material can be reduced while having predetermined heat resistance. The floor structure of the railcar includes a underframe having a pair of side sills extending in a railcar longitudinal direction and a cross beam arranged between the side sills and extending in a railcar width direction, a structural floor provided on an upper surface of the underframe, and a first heat insulating material arranged on a lower side of the structural floor via an air layer for the structural floor.

Abstract: The present invention has as its object the provision of a lithium ion capacitor having high capacity and high output characteristics and also having high safety that allows suppression of an increase in surface temperature even when an internal short circuit accidentally occurs. The lithium ion capacitor of the present invention comprises: a lithium ion capacitor element formed by overlaying a positive electrode sheet and a negative electrode sheet on top of one another with a separator interposed therebetween; an electrolyte solution; and an outer container that contains the lithium ion capacitor element and the electrolyte solution, a porous layer is formed on an outer surface of the lithium ion capacitor element, and the lithium ion capacitor satisfies following relational expressions (1) and (2): 35?T×R/C??relational expression (1): 0.

Abstract: The present invention is a bodyshell structure of a railcar, the bodyshell structure including a plurality of side window opening portions formed on a side bodyshell along a railcar longitudinal direction, and the side window opening portions include a plurality of large window opening portions arranged on a railcar-longitudinal-direction center portion of the side bodyshell and a plurality of small window opening portions arranged on both railcar-longitudinal-direction sides of the large window opening portions and each having a smaller opening area than the large window opening portion.

Abstract: The present invention is a bodyshell structure of a railcar, the bodyshell structure including: a side bodyshell including an outside plate portion, an inside plate portion, and a joint portion configured to join the outside plate portion and the inside plate portion; an inside window opening formed on the inside plate portion and provided inside the railcar; and an outside window opening formed on the outside plate portion and having a smaller opening area than the inside window opening, and at least one of the inside window opening and the outside window opening has an oval shape extending in the railcar longitudinal direction or a circular shape.

Abstract: An accumulator device includes: an outer container with mutually overlapped outer films bonded air-tightly to each other at a bonding portion formed along respective outer peripheral edge portions; an electrode unit accommodated inside the outer container and including positive and negative electrode sheets stacked one on another with a separator disposed therebetween, the positive and negative electrode sheets each including a current collector on which an electrode layer is formed; positive and negative electrode terminals provided to protrude from inside the outer container to outside through the bonding portion; and an electrolytic solution injected in the outer container. The positive electrode terminal includes an aluminum terminal substrate and a nickel-plating coating formed on a surface of an outer end portion of the terminal substrate located outside the outer container; an inner edge of the nickel-plating coating is located within the bonding portion.

Abstract: A laminate-packaged electric storage device includes an outer package, an electric storage device element, and an electrolyte solution, the outer package formed by stacking and seal-tight bonding outer package films along a bonding section formed in an outer edge area of the outer package films, the electric storage device element and the electrolyte solution being held in a receiving section formed inside the outer package. A non-bonding section surrounded by the bonding section and communicating with the receiving section is formed in the outer edge area, an opening is formed through at least one outer package film, and a seal section is formed to surround the opening formed in an area of the non-bonding section, the outer package films bonded in the seal section, and the opening formed in the area of the non-bonding section at a position other than a center position.

Abstract: A bodyshell of a railcar includes side outside plates, end bodyshells, and guiding plates. The side outside plate are located at both end portions of a carbody in a vehicle width direction. The end bodyshell includes an end outside plate and a corner post. The end outside plates are located at both end portions of the carbody in the longitudinal direction. The corner posts are located at four corners of the carbody. The corner post is joined to the adjacent end outside plate and the adjacent side outside plate. The guiding plate is provided at the side outside plate so as to cover the corner post from a vehicle exterior. The guiding plate includes an inclined portion and a joining portion. The inclined portion is provided in front of the corner post and inclined to the rear side toward the side outside plate.

Abstract: A bodyshell of a railcar includes side outside plates and end bodyshells. The side outside plates are respectively provided at both end portions of an underframe in a vehicle width direction. The end bodyshell includes end outside plates and corner posts. The end outside plates are respectively provided at front and rear end portions of the underframe. The corner posts are respectively provided at four corners of the underframe and are joined to the end outside plates and the side outside plates. Moreover, the corner post includes a side plate joining portion. The side plate joining portion overlaps a front end portion of the side outside plates from an outer side in the vehicle width direction and is joined to the side outside plate.

Abstract: A railcar that includes an underframe, a front surface frame located at a front surface portion of a carbody and having a lower end portion coupled to the underframe, and a buffer member coupled to the front surface frame and extending toward a vehicle interior side. Then, the buffer member is provided at a position higher than the underframe.

Abstract: The present invention provides a hard capsule that exhibits excellent stability even when filled with a solvent for dissolving a poorly soluble drug, and that achieves improved moldability and drying rate. As such a hard capsule, the present invention provides a hard capsule having a film containing (A) a polymer or copolymer obtained by polymerizing or copolymerizing at least one polymerizable vinyl monomer represented by Formula (1): H2C?C(R1)—COOR2??(1) wherein R1 represents hydrogen or methyl, and R2 represents hydrogen or alkyl having 1 to 4 carbon atoms, in the presence of polyvinyl alcohol and/or a derivative thereof, and (B) at least one water-soluble polymer selected from the group consisting of cellulose polymers, dextrin, and polyvinylpyrrolidone.

Abstract: The object of the invention is to provide a hard capsule that is excellent in stability even when filled with a solvent for dissolving a poorly soluble pharmaceutical active ingredient, and that has excellent mechanical strength in a low-humidity environment. The invention provides a hard capsule having a film containing (A) a polymer or copolymer obtained by polymerizing or copolymerizing at least one polymerizable vinyl monomer represented by Formula (1): H2C?C(R1)—COOR2 (1), wherein R1 represents hydrogen or methyl, and R2 represents hydrogen or C1-C4 alkyl, in the presence of polyvinyl alcohol and/or a derivative thereof; and (B) at least one compound selected from the group consisting of (B-1) polyhydric alcohols, (B-2) esters of polyhydric alcohols and C1--C5 carboxylic acids, and (B-3) esters of polyvalent carboxylic acids and C1-C5 alcohols.

Abstract: The invention has as its object the provision of a wound-type accumulator, by which arrangement of a lithium ion source is simplified, and the time required to inject an aprotic organic solvent electrolyte solution and the time required for predoping are shortened, and thus the assembly can be completed in a short period of time to achieve high productivity.

Abstract: A method for performing communication by utilizing the AC current in a power line without requiring any modulation or superposition of a high frequency. In the communication method utilizing the AC current in a secondary power line (L), an electric load (e.g. a load current) is imparted to the secondary power line (L), the load current is added to one AC current wavelength of the secondary power line (L), and an AC current including the processed waveform is transmitted as an information signal.

Abstract: In energy absorbing structures in an entire train, a compression amount at an interface between cars at an end portion of a train is reduced and compression at an interface between cars at a center portion of the train is facilitated. In the structure, a plurality of cars (A1 to A12) are coupled to one another through couplers (B1 to B11), and energy absorbing structures (S12 to S42, S82 to S122) are provided between cars. An average compressive load corresponding to a value obtained by dividing an energy absorption amount of the energy absorbing structure by a maximum compression amount of the energy absorbing structures (S12 to S42, S82 to S122) is set smaller at an interface between cars at a center portion of the train than at an interface between cars on an outer side of the train (closer to an end portion).

Abstract: Disclosed is a collision energy absorbing structure of a vehicle capable of relieving impact by using a tubular pipe member having equally-sized rectangular cross section and equal plate thickness and including no inside ribs and by adding a suitable trigger, and being easily manufactured at a low cost. By forming a cutout portion on the left side of the front end portion of the collision energy absorbing structure, the deformation starting portion is provided. The cutout portion is formed at parts of three flat plate portions comprised of one of the four flat plate portions and corresponding opposite portions thereof. The general portion, which follows the deformation starting portion, is tubular with rectangular cross section and has a closed cross-section structure.