Evaluation of surface integrity when drilling Inconel 718 through experimental measurement and finite element analysis

2022 ◽  
Author(s):  
Mohammad Lotfi ◽  
Ali Akhavan Farid ◽  
Javad Akbari ◽  
Safian Sharif ◽  
Amrifan Saladin Mohruni
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Surface Integrity ◽  
Experimental Measurement ◽  
Inconel 718 ◽  
Element Analysis

scholarly journals Thermo-responsive and shape-morphing CF/GF composite skin: Full-field experimental measurement, theoretical prediction, and finite element analysis

2021 ◽  
Vol 160 ◽  
pp. 106874
Author(s):  
Jamal Seyyed Monfared Zanjani ◽  
Pouya Yousefi Louyeh ◽  
Isa Emami Tabrizi ◽  
Abdulrahman Saeed Al-Nadhari ◽  
Mehmet Yildiz
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Theoretical Prediction ◽  
Experimental Measurement ◽  
Element Analysis ◽  
Full Field ◽  
Shape Morphing

scholarly journals Eliminating Underconstraint in Double Parallelogram Flexure Mechanisms

2015 ◽  
Vol 137 (9) ◽  
Author(s):  
Robert M. Panas ◽  
Jonathan B. Hopkins
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Experimental Measurement ◽  
Degrees Of Freedom ◽  
Dynamic Performance ◽  
Average Error ◽  
Static Stiffness ◽  
Element Analysis ◽  
Linkage Design ◽  
Analytical Expressions

We present an improved flexure linkage design for removing underconstraint in a double parallelogram (DP) linear flexural mechanism. This new linkage alleviates many of the problems associated with current linkage design solutions such as static and dynamic performance losses and increased footprint. The improvements of the new linkage design will enable wider adoption of underconstraint eliminating (UE) linkages, especially in the design of linear flexural bearings. Comparisons are provided between the new linkage design and existing UE designs over a range of features including footprint, dynamics, and kinematics. A nested linkage design is shown through finite element analysis (FEA) and experimental measurement to work as predicted in selectively eliminating the underconstrained degrees-of-freedom (DOF) in DP linear flexure bearings. The improved bearing shows an 11 × gain in the resonance frequency and 134× gain in static stiffness of the underconstrained DOF, as designed. Analytical expressions are presented for designers to calculate the linear performance of the nested UE linkage (average error < 5%). The concept presented in this paper is extended to an analogous double-nested rotary flexure design.

scholarly journals Finite Element Analysis of Surface Integrity in Deep Ball-Burnishing of a Biodegradable AZ31B Mg Alloy

Metals ◽  
2018 ◽  
Vol 8 (2) ◽  
pp. 136 ◽  
Author(s):  
Mohammad Uddin ◽  
Colin Hall ◽  
Ryan Hooper ◽  
Eric Charrault ◽  
Peter Murphy ◽  
...  
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Surface Integrity ◽  
Mg Alloy ◽  
Ball Burnishing ◽  
Element Analysis

Deformation Behavior of Grains Near Defects in Direct Metal Laser Sintered Inconel 718 During Indentation

2020 ◽  
Author(s):  
Mustafa Rifat ◽  
Saurabh Basu
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Plane Strain ◽  
Microstructure Evolution ◽  
Mechanical Behaviour ◽  
Inconel 718 ◽  
Orientation Imaging Microscopy ◽  
Ex Situ ◽  
Element Analysis ◽  
Porosity Defects

Abstract The present work utilizes Orientation Imaging Microscopy and Finite Element Modelling to analyse microstructure evolution in grains near defects during plane strain indentation of direct metal laser sintered Inconel 718. Defects are inevitably produced during printing of metals and they degrade the mechanical behaviour of parent components. Understanding microstructure evolution of grains present near defects can help create better predictive models of mechanical behaviour of components resulting from additive manufacturing. In this work, an ex-situ study of microstructure evolution during plane strain indentation of DMLS Inconel 718 specimens is performed. Regions that lie near volumetric porosity defects were studied. Grain Orientation Spread was utilized as a metric to quantify intra-granular deformation. It was seen that microstructure evolution of grains near defects is enhanced due to strain concentrations whereby they exhibit larger orientation spread after plastic deformation. Finite Element Analysis was used to simulate the plane strain indentation test on the specimen in which, porosity defects and roughness textures similar to those seen in the as-received specimen were programmed using the python scripting interface of Abaqus. Results from finite element analysis were compared with insights from microstructure analysis to describe evolution of microstructure during deformation near defects.

Finite element analysis of laser inert gas cutting on Inconel 718

2011 ◽  
Vol 60 (9-12) ◽  
pp. 995-1007 ◽  
Author(s):  
K. Y. Nyon ◽  
C. Y. Nyeoh ◽  
Mohzani Mokhtar ◽  
Razi Abdul-Rahman
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Inconel 718 ◽  
Inert Gas ◽  
Element Analysis
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