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1. JP2016161523 - RESIDUAL STRESS ESTIMATION METHOD AND RESIDUAL STRESS ESTIMATION DEVICE

Office Japan
Application Number 2015043082
Application Date 05.03.2015
Publication Number 2016161523
Publication Date 05.09.2016
Grant Number 6345617
Grant Date 01.06.2018
Publication Kind B2
IPC
G01L 1/00
GPHYSICS
01MEASURING; TESTING
LMEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
1Measuring force or stress, in general
CPC
G01L 5/0047
GPHYSICS
01MEASURING; TESTING
LMEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
5Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
0047measuring forces due to residual stresses
G01L 1/00
GPHYSICS
01MEASURING; TESTING
LMEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
1Measuring force or stress, in general
G01M 15/00
GPHYSICS
01MEASURING; TESTING
MTESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
15Testing of engines
G01N 3/066
GPHYSICS
01MEASURING; TESTING
NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
3Investigating strength properties of solid materials by application of mechanical stress
02Details
06Special adaptations of indicating or recording means
066with electrical indicating or recording means
G01N 2203/0019
GPHYSICS
01MEASURING; TESTING
NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
2203Investigating strength properties of solid materials by application of mechanical stress
0014Type of force applied
0016Tensile or compressive
0019Compressive
G01N 2203/0075
GPHYSICS
01MEASURING; TESTING
NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
2203Investigating strength properties of solid materials by application of mechanical stress
0058Kind of property studied
0069Fatigue, creep, strain-stress relations or elastic constants
0075Strain-stress relations or elastic constants
Applicants KOBE STEEL LTD
株式会社神戸製鋼所
Inventors OKITA KEISUKE
沖田 圭介
NAKAGAWA TOMOKAZU
中川 知和
YAMADA MARIKO
山田 真理子
Agents 是枝 洋介
Title
(EN) RESIDUAL STRESS ESTIMATION METHOD AND RESIDUAL STRESS ESTIMATION DEVICE
(JA) 残留応力推定方法及び残留応力推定装置
Abstract
(EN)

PROBLEM TO BE SOLVED: To provide a residual stress estimation method and a residual stress estimation device that are capable of curbing the collection number of cut pieces for measuring inherent strain without lowering estimation accuracy of residual stress.

SOLUTION: When it is assumed that inherent strain is distributed uniformly in a single direction in a structure, a user measures residual stress from a cut piece collected within an area where the inherent strain is distributed uniformly, and then inputs a measurement into a residual stress estimation device. The residual stress estimation device uses the given residual stress measurement to estimate a two-dimensional distribution of inherent strain on an analysis face perpendicular to the single direction in the structure, copies the estimated two-dimensional distribution of inherent strain in the single direction and then estimates a three-dimensional distribution of inherent strain in the structure.

SELECTED DRAWING: Figure 5

COPYRIGHT: (C)2016,JPO&INPIT

(JA)

【課題】残留応力の推定精度を低下させることなく、固有ひずみを計測するための切断片の採取数を抑制することが可能な残留応力推定方法及び残留応力推定装置を提供する。
【解決手段】
構造物に固有ひずみが一方向に一様に分布することが想定される場合に、前記固有ひずみが一様に分布する領域内で採取された切断片から、ユーザが残留応力を計測し、計測値を残留応力推定装置に入力する。残留応力推定装置は、与えられた残留応力の計測値を用いて、構造物における一方向に直交する解析面における固有ひずみの2次元分布を推定し、推定された固有ひずみの2次元分布を前記一方向に転写して、構造物における固有ひずみの3次元分布を推定する。
【選択図】図5