Şimşir, Caner

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Profile URL
https://hdl.handle.net/20.500.14411/7828
Name Variants
C.,Simsir
Simsir, Caner
Şimşir, Caner
C., Simsir
Simsir,C.
C.,Şimşir
S.,Caner
S., Caner
Caner, Simsir
Şimşir,C.
Caner, Şimşir
Ş.,Caner
Simsir, C.
Job Title
Doktor Öğretim Üyesi
Email Address
caner.simsir@atilim.edu.tr
Main Affiliation
Manufacturing Engineering
Status
Former Staff
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WoS Researcher ID

Sustainable Development Goals

2

ZERO HUNGER
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0

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14

LIFE BELOW WATER
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17

PARTNERSHIPS FOR THE GOALS
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5

GENDER EQUALITY
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16

PEACE, JUSTICE AND STRONG INSTITUTIONS
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8

DECENT WORK AND ECONOMIC GROWTH
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4

QUALITY EDUCATION
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6

CLEAN WATER AND SANITATION
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7

AFFORDABLE AND CLEAN ENERGY
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10

REDUCED INEQUALITIES
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11

SUSTAINABLE CITIES AND COMMUNITIES
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9

INDUSTRY, INNOVATION AND INFRASTRUCTURE
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3

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1

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3

GOOD HEALTH AND WELL-BEING
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2

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12

RESPONSIBLE CONSUMPTION AND PRODUCTION
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LIFE ON LAND
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This researcher does not have a Scopus ID.
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Scholarly Output

33

Articles

14

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0/0

Supervised MSc Theses

12

Supervised PhD Theses

0

WoS Citation Count

176

Scopus Citation Count

228

WoS h-index

8

Scopus h-index

9

Patents

0

Projects

0

WoS Citations per Publication

5.33

Scopus Citations per Publication

6.91

Open Access Source

6

Supervised Theses

12

Google Analytics Visitor Traffic

JournalCount
Computational Materials Science3
Materialwissenschaft und Werkstofftechnik3
Hittite Journal of Science and Engineering2
Materials Performance and Characterization2
International Conference on the Technology of Plasticity (ICTP) -- SEP 17-22, 2017 -- Cambridge, ENGLAND1
Current Page: 1 / 3

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COAR Resource Type: text::conference output

Scholarly Output Search Results

Now showing 1 - 6 of 6
  • Thumbnail Image
    Conference Object
    Citation - Scopus: 10
    The Prediction of the Distortion of Blank-Hardened Gear Blanks by Considering the Effect of Prior Manufacturing Operations
    (2011) Şimşir,C.; Eisbrecher,I.; Hunkel,M.; Lübben,T.; Hoffmann,F.
    This article presents a recently developed mathematical model for Integration of the effects of prior manufacturing steps into heat treatment simulations by considering the modification of the banded microstructure in forming and machining processes. The model was justified by simulating the heating, austenitizatlon and quenching of dilatometer specimens machined from the forged discs with distinct orientations to the banded microstructure. Then, It Is tested In prediction of dishing of blank-hardened gear blanks, which cannot be reproduced by previously available models. The model provides promising results for process chain simulation and development of system-oriented measures for the solution of heat treatment distortion problem. © 2011 Wiley-VCH Verlag GmbH & Co. KGaA. Weinheim.
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    Conference Object
    Citation - WoS: 3
    Citation - Scopus: 4
    A Potential Solution To Mystical Materials in Indentation Test
    (Elsevier Science Bv, 2017) Billur, E.; Cetin, B.; Music, O.; Simsir, C.; Davut, K.
    Various methods have been designed to determine the elasto-plastic properties of metals. Instrumented indentation test (IIT) is considered to be a good candidate to determine local properties after manufacturing operations. In order to acquire elastoplastic properties from IIT, either dimensional analysis or inverse analysis of the force-displacement curve is performed. However, the major drawback of those methods is the uniqueness of the solution. Some materials may exhibit almost identical force-depth curves, although they have different elastoplastic properties. Those materials are referred as "mystical materials". In this contribution, topological features of the indentation surfaces, i.e. indent size, pile-up and sink-in behaviour, are investigated to find a differentiating property. According to the results, indent size, pile-up and sink-in behaviour may help to find the unique solution to the inverse problem. (C) 2017 The Authors. Published by Elsevier Ltd. Peer-review under responsibility of the scientific committee of the International Conference on the Technology of Plasticity.
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    Conference Object
    Simulation and Optimization in Quenching Technology for Automotive Components
    (ASM International, 2013) Felde,I.; Simsir,C.
    Heat treatment is widely used in automotive industry from a simple immersion quenching of gears upto the complex production technology of press hardening. The selection of process parameters to develop the desired properties is challenging due to the complexity of the physical phenomena occuring during the manufacturing clycle. In the last decades several compuational methods have been applied successful to optimize the heat treatment processes. The paper is focusing on some examples demonstrating the state of the art of the simulation tools including the physical phenomena of quenching, the theoretical background of the coupled modek used for estimation the microstructure, mechanical propertis and deformation of automotive components heat treated.
  • Thumbnail Image
    Conference Object
    Citation - Scopus: 2
    Fem Modeling of the Distortion of Blank/Case Hardened Gear Blanks Due To Chemical Banding
    (2012) Şimşir,C.; Hunkel,M.; Lütjens,J.; Rentsch,R.
    In this study, a FEM process-chain simulation model is presented for the prediction of distortion of blank and case-hardened SAE 5120 (EN 20MnCr5) steel gear blanks. For this purpose, the evolution of the banded microstructure stemming from the continuous casting process was traced by computer simulations of subsequent shape rolling, forging and machining steps. The calculated flow-net was imported into the in-house heat treatment simulation module empowered with the recently developed "Anisotropic Transformation Strain (ATS)" model which enables the inclusion of the effect of banded microstructure on distortion. Then, both blank and case-hardening processes were simulated and verified experimentally. The results indicate good predictions of the dishing directions and dishing-free cutting strategy in both cases; the dishing magnitude is predicted well in blank-hardening simulations while the quality of the prediction is reasonable in case-hardening. Copyright © 2012 ASM International® All rights reserved.
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    Conference Object
    Citation - WoS: 4
    Citation - Scopus: 4
    A Material Perspective on Consequence of Deformation Heating During Stamping of Dp Steels
    (Iop Publishing Ltd, 2017) Simsir, C.; Cetin, B.; Efe, M.; Davut, K.; Bayramin, B.
    Recent studies showed that, during stamping of high strength steels at industrially relevant production rates, local temperature in the blank may rise up to 200 degrees C - 300 degrees C due to deformation heating. Moreover, die temperature may also rise up to 100 degrees C - 150 degrees C for progressive stamping dies. Based on the common assumption that the blank softens as the temperature increases, thermal softening creates a margin in Forming Limit Diagram (FLD) and therefore the FLD determined at room temperature can safely be used for those cases. In this article, the validity of this assumption on DP590 steel is questioned by high temperature tensile tests (RT - 300 degrees C) at various strain rates (10(-3) s(-1) - 1 s(-1)). The results indicated a decrease both in uniform and total elongation in 200 degrees C - 300 degrees C range together with several other symptoms of Dynamic Strain Aging (DSA) at all strain rates. Concurrent with the DSA, the simulated FLD confirms the lower formability at high temperature and strain rates. Thus, it is concluded FLD determined at RT may not be valid for the investigated steels.
  • Thumbnail Image
    Conference Object
    Citation - WoS: 10
    Citation - Scopus: 12
    A Flow Stress Model for Steel in Cold Forging Process Range and the Associated Method for Parameter Identification
    (Springer London Ltd, 2018) Simsir, Caner; Duran, Deniz
    Detailed thermo-mechanical characterization of DIN 16MnCr5 covering the process range of cold forging applications (0.01 s(-1) 40 s(-1), 25 A degrees C Ta 400 A degrees C) by compression tests revealed flow stress instabilities associated with dynamic strain aging (DSA) which cannot be reproduced by conventional flow stress models. As a remedy, a flow stress model capable of capturing sharp changes in flow stress, strain hardening, and strain rate sensitivity is proposed. Then, a method for parameter identification is presented which can deal with inhomogeneous deformation heating of the specimen at relatively high-strain-rate tests. The presented method involves response surface-based numerical optimization of the flawed compression tests coupled with finite element (FE) simulation. The proposed flow stress model and the extracted parameters are validated in a forward rod extrusion process without using any case-specific determined parameters in FE simulation. A natural agreement is obtained between the experimental and the predicted results in terms of both the force-displacement curve and the part geometry. The authors think that the flow stress instabilities encountered in the cold forging process range may have further consequences in other inverse analysis attempts such as friction coefficient or critical damage parameter determination and that the proper treatment of material data as put forth in this study can improve the predictive capability of process modeling.