Patents by Inventor Yoshiyuki KASEDA

Yoshiyuki KASEDA has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 10661328
    Abstract: A production method of a wheel rim includes: a step of forming a cylindrical rim material into a rim shape; and a step of increasing a sheet thickness of at least one opening end edge of the rim material at least one of before and after the step of forming of the cylindrical rim material. In addition, in the step of increasing of the sheet thickness, in a state in which the opening end edge is inserted into an annular groove of a die provided with the annular groove which is wider than the sheet thickness of the opening end edge, a thickened portion is formed by exerting a compressive load in an axial direction of the rim material on the opening end edge.
    Type: Grant
    Filed: March 12, 2015
    Date of Patent: May 26, 2020
    Assignee: NIPPON STEEL CORPORATION
    Inventors: Yoshiyuki Kaseda, Yutaka Mikazuki
  • Publication number: 20200025659
    Abstract: This fracture determination device 1 is provided with: an element extraction unit 22 which extracts elements included in the heat affected zone formed around a spot weld in a steel material; a reference forming limit value generation unit 23 which generates a reference forming limit value depending on sheet thickness and material property of the heat affected zone on the basis of reference forming limit value information; a heat affected zone forming limit value generation unit 24 which uses the tensile strength of the steel material and element size to change the reference forming limit value, predict the forming limit value for the element size and generated a forming limit value in the heat affected zone; an analysis running unit 25 which runs a deformation SIM using input information and which outputs deformation information including maximum principal strain and minimum principal strain of each of the elements; a principal strain determination unit 26 which determines the maximum principal strain and the
    Type: Application
    Filed: October 5, 2017
    Publication date: January 23, 2020
    Applicant: NIPPON STEEL & SUMITOMO METAL CORPORATION
    Inventors: Takahiro AITOH, Koichi HAMADA, Yoshiyuki KASEDA
  • Publication number: 20190212236
    Abstract: A fracture determination device is provided which can predict fracture in an ultra-hard steel material.
    Type: Application
    Filed: October 5, 2017
    Publication date: July 11, 2019
    Applicant: NIPPON STEEL & SUMITOMO METAL CORPORATION
    Inventors: Takahiro AITOH, Jun NITTA, Yoshiyuki KASEDA
  • Publication number: 20190100084
    Abstract: This door inner panel is a door inner panel formed of a metal sheet and includes a first panel portion having a first top sheet portion and a first standing wall portion connected to the first top sheet portion, a second panel portion having a second top sheet portion disposed with a gap with the first top sheet portion of the first panel portion and a second standing wall portion connected to the second top sheet portion, a flange portion connected to the first standing wall portion and the second standing wall portion, and a flat sheet portion disposed between the first panel portion and the second panel portion, the first standing wall portion and the second standing wall portion respectively have a level difference portion, and both ends of the flat sheet portion are integrated with the flange portion or the level difference portions.
    Type: Application
    Filed: March 16, 2017
    Publication date: April 4, 2019
    Applicant: NIPPON STEEL & SUMITOMO METAL CORPORATION
    Inventors: Kenichiro OTSUKA, Atsushi ONO, Yoshiyuki KASEDA, Yoshiaki NAKAZAWA
  • Publication number: 20190064040
    Abstract: In a deformation simulation of a member joined by spot welding, an effective width being a width in a direction intersecting a direction of a load centered on a spot welded portion (14) on a flange face (13a) where the spot welded portion (14) is provided of a member (10) and changing correspondingly to a change in the load is calculated every predetermined time interval, and fracture of the spot welded portion (14) is predicted using the calculated effective width. This configuration enables precise fracture prediction of a spot welded portion where spot welding is modeled, for example, in a case of performing collision deformation prediction of an automobile member on a computer.
    Type: Application
    Filed: February 3, 2017
    Publication date: February 28, 2019
    Applicant: NIPPON STEEL & SUMITOMO METAL CORPORATION
    Inventors: Takahiro AITOH, Toshiyuki NIWA, Yoshiyuki KASEDA, Nobuyuki MANIWA
  • Publication number: 20190009654
    Abstract: An object of the present invention is to provide a panel-like formed product having an excellent collision property. The panel-like formed product (1) includes a polygonal top board (2), two or more vertical walls (5), and a flange (7). The vertical walls (5) extend from two or more sides of the top board (2), and include at least two adjacent vertical walls (5) extending from at least two adjacent sides of the top board (2). The flange (7) connects to lower ends of the vertical walls (5) and spreads in directions in which the top board (2) spreads. The top board (2) includes a frame portion (3) including the two or more sides of the top board from which the vertical walls extend, and a concave portion (4) which is located at an inner side of the frame portion (3) and recedes from the frame portion (3). The two or more adjacent vertical walls (5) include a first vertical wall section (5A), a stair (6), and a second vertical wall section (5B).
    Type: Application
    Filed: January 27, 2017
    Publication date: January 10, 2019
    Inventors: Kenichiro OTSUKA, Yoshiaki NAKAZAWA, Takeshi KAWACHI, Yoshiyuki KASEDA
  • Publication number: 20180032654
    Abstract: A break prediction method according to the present invention predicts a break of a joint portion of an object to be analyzed including a pair of members joined to each other by using a finite element method, and includes a first step of acquiring at least an element size of a base material portion, from among parameters set in an element model for the object to be analyzed; a second step of calculating, as a break discernment standard, a break limit moment defined by a function including the element size of the base material portion as a variable; and a third step of discerning whether the moment applied to the joint portion in a deformation analysis of the element model for the object to be analyzed exceeds the break limit moment, and outputting the result of the discernment as a break prediction result for the joint portion.
    Type: Application
    Filed: February 17, 2016
    Publication date: February 1, 2018
    Applicant: NIPPON STEEL & SUMITOMO METAL CORPORATION
    Inventors: Takahiro AITOH, Yoshiyuki KASEDA, Yusuke TSUNEMI
  • Publication number: 20160332210
    Abstract: A production method of a wheel rim includes: a step of forming a cylindrical rim material into a rim shape; and a step of increasing a sheet thickness of at least one opening end edge of the rim material at least one of before and after the step of forming of the cylindrical rim material. In addition, in the step of increasing of the sheet thickness, in a state in which the opening end edge is inserted into an annular groove of a die provided with the annular groove which is wider than the sheet thickness of the opening end edge, a thickened portion is formed by exerting a compressive load in an axial direction of the rim material on the opening end edge.
    Type: Application
    Filed: March 12, 2015
    Publication date: November 17, 2016
    Applicant: NIPPON STEEL & SUMITOMO METAL CORPORATION
    Inventors: Yoshiyuki KASEDA, Yutaka MIKAZUKI