Методический подход и программа для оценки нагруженности, дефектности и деградации свойств материалов конструкций на основе обработки экспериментальных данных

Методический подход и программа для оценки нагруженности, дефектности…

ISSN 0236-3941. Вестник МГТУ им. Н.Э. Баумана. Сер. Машиностроение. 2017. № 5

Просьба ссылаться на эту статью следующим образом:

Чернятин А.С., Разумовский И.А. Методический подход и программа для оценки

нагруженности, дефектности и деградации свойств материалов конструкций на основе

обработки экспериментальных данных // Вестник МГТУ им. Н.Э. Баумана. Сер. Маши-

ностроение. 2017. № 5. С. 64–74. DOI: 10.18698/0236-3941-2017-5-64-74

METHODOLOGICAL APPROACH AND SOFTWARE FOR LOADS,

DEFECTS AND DEGRADATION OF MECHANICAL CHARACTERISTICS

IN STRUCTURAL MATERIALS, BASED ON PROCESSING

EXPERIMENTAL DATA

A.S. Chernyatin

cas@inbox.ru

I.A. Razumovskiy

murza45@gmail.com

Bauman Moscow State Technical University, Moscow, Russian Federation

Mechanical Engineering Research Institute of the Russian Academy

of Sciences (IMASH RAN), Moscow, Russian Federation

Abstract

Keywords

The article deals with the basics of an experimental com-

putational method to assess of loads, defects and defor-

mation characteristics of materials based on mathemati-

cally processing experimentally obtained displacement or

strain fields caused by exposing the object under consi-

deration to certain factors (varying the load, drilling a

small hole, indentation etc.). We base our method on

determining the parameters desired so as to minimise the

objective function describing the discrepancy between

considerable arrays of experimental data and the results

of a series of finite element computations aimed at solving

model problems. We supply example solutions of model

problems dealing with determination of loads and dimen-

sions of surface and subsurface defects on full scale ob-

jects, as well as with simultaneously determining existing

stresses and the yield point in a material by means of

processing residual displacement fields caused by using a

spherical indenter to the load workpiece zone under

consideration and subsequent unloading

Load and defect assessment, finite ele-

ment method, optical digital methods of

displacement investigation, indentation

method, optimisation problem

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