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Engin AKTAŞ, Ph. D. Associate Professor |
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Department of
Civil Engineering Gülbahçe Campus Tel:
+90(232) 750 6809 Fax:+90(232) 750 6355 E-mail: enginaktas@iyte.edu.tr |
Education
Post-Doc. US Naval Research Lab (NRL)
Jan. 2007 – July 2008
Ph.D. University of Pittsburgh
Dec. 2001
M.S. University of Pittsburgh
Dec. 1996
B.S. Middle East Technical
University (METU) July 1993
Teaching Activities
Undergraduate Courses:
CE205 – Statistical Methods for Engineers
CE221 – Engineering Mechanics I: Statics
CE224 – Mechanics of Materials
CE428 – Structural Design: Steel Structures
Graduate Courses:
CE541 – Structural Reliability
CE551 – Optimization and Design
EM501 – Research Methodologies
EM506 – Systems Engineering and Operations Research
Research Activities
Research interests:
Safety and Reliability in Structural Engineering
Structural Health Monitoring based Structural Reliability
Analysis
Reliability Based Cost Optimization
Reliability Based Structural Design Code Calibration
Reliability Based Assessment of Existing Structures
Historical Structures
Computational Mechanics
Composite Structures
Earthquake Engineering
Non-Destructive Evaluation Methods for Buildings
Modal Testing
Research Projects:
Current
Developing innovative methods of
joining structural composite parts for aviation applications, characterization
of their resistance to environmental effects and mechanical performance (PI: Prof. Dr. Metin TANOĞLU) funded by TÜBİTAK(218M701).
Completed
Design, Optimization and Production of Prototypes
of Light-Weight and Pressure Resistant Composite Tank Materials and Systems (PI: Dr. Seçil Artem) funded by TÜBİTAK (215M182)
Optimization Driven
Architectural Design of Structures - OptArch (Project Coordinator: Dr.
Nikolaos D. Lagaros, National Technical University of
Athens) EU Funded (H2020-MSCA-RISE-2015 – 689983) [2016 - 2020 (48 months)]
Design and Development of Production Techniques of
Composite-based Leaf Spring Systems for Automotive Sector (PI: Dr. Metin Tanoğlu) funded
by Ministry of Science, Industry and Technology.
Receiver Operating
Characteristic (ROC) Curves for Quantifying Damage Detection in Sandwich Panel Delaminations (NRL/ASEE Fellowship)
Energy Efficiency in Public Buildings: Energy Performance Assessment of IZTECH Administrative Building (Co-PI: Dr.Gülden Gökçen) funded by IZTECH BAP.
Structural
Response Improvement by using MR Fluid Dampers. (PI: Dr.Gürsoy Turan) funded by
DPT (2003K120690).
Determination
of the Essentials for the Analyses of Historical Masonry Structures;
A Case Study: Urla Kamanlı Mosque funded by TÜBİTAK (IÇTAG-I591).
Publications:
Chapters
Hizal, Ç., Aktaş, E. (2021) “Structural Health Monitoring Integrated Reliability Assessment of Engineering Structures” in Reliability-Based Analysis and Design of Structures and Infrastructure, ed. Farsangi, E.N, Noori, M., Gardoni, P. Takewaki, I., Varum. H., Bogdanovic. CRC Press. ISBN 9780367758080.
Akgün, Y., Maden, F., Gür, Ş., Kiper, G., Korkmaz, K., Aktaş, E. Yar-Uncu, M (2019). 3.3. Scissor linkages in the design of
adaptive morphologies, New MOVE. DOI:
10.1515/9783035613629-027
Journal Papers
Kartav, O., Kangal, S., Yücetürk, K., Tanoğlu, M., Aktaş, E., Artem, H.S. (2021) “Development
and analysis of composite overwrapped pressure vessels for hydrogen storage”
Journal of Composite Materials. https://doi:10.1177/00219983211033568.
Hızal, Ç., Aktaş, E. (2021). “Probabilistic
investigation of error propagation in frequency domain decomposition‐based
operational modal analysis” Structural Control and Health Monitoring,
28(8), e2759. https://doi.org/10.1002/stc.2759.
Uzun, E.T., Aktaş, E. (2021). “Reliability
of Corroded Steel Members Subjected to Elastic Lateral Torsional Buckling”
International Journal Steel Structures, 21(4), 1478-1501. https://doi.org/10.1007/s13296-021-00516-8.
Kangal, S., Sayı, H.A., Ayakdaş,
O., Kartav,
O., Aydın, L., Artem, S.H., Aktaş, E., Yücetürk, K., Tanoğlu,
M., Kandemir,
S., and Beylergil,
B. (2021). "A
Comprehensive Study on Burst Pressure Performance of Aluminum Liner for
Hydrogen Storage Vessels." ASME. J. Pressure Vessel Technol. August
2021; 143(4): 041503. DOI:
https://doi.org/10.1115/1.4049644
Durmuşlar,
F., Hamamcıoğlu-Turan,
M., Yücetürk,
K., Aktaş,
E. “Consolidation
of a Bath Ruin in an Archaeological Site” International Journal of
Architectural Heritage accepted (2020). DOI:
10.1080/15583058.2020.1777594.
Gençer, F., Hamamcıoğlu-Turan, M.,
Duran H. E., Aktaş, E. “Vulnerability of ancient
dry-joint masonry towers” Periodica Polytechnica Architecture, 51(2), 165-177, (2020). https://doi.org/10.3311/PPar.15830
Durmuşlar, F., Ipekçi, E., Hamamcıoğlu-Turan, M.,
Aktaş,
E. “Proposals
for Monitoring Current Conservation Condition of Historical Masonry Buildings:
Matrone Church and Cardak Han Cases” Art-Sanat,
14, pp. 111-133, (2020). https://doi.org/10.26650/artsanat.2020.14.0005
Gençer, F., Hamamcıoğlu-Turan, M.,
Aktaş,
E. “Structural
vulnerability of ancient dry masonry towers under lateral loading” Journal
of Archaeological Science: Reports, 34, 102663, (2020). DOI:
10.1016/j.jasrep.2020.102663
Beylergil, B., Tanoğlu, M., Aktaş, E. “Experimental
and statistical analysis of carbon fiber/epoxy composites interleaved with
nylon 6,6 nonwoven fabric interlayers” Journal of Composite Materials,
54(27), pp. 4173-4184, (2020). https://doi.org/10.1177/0021998320927740
Kangal, S., Kartav,
O, Tanoğlu, M., Aktaş, E., Artem, H.S. "Investigation
of interlayer hybridization effect on burst pressure performance of composite
overwrapped pressure vessels with load-sharing metallic liner."
Journal of Composite Materials, Volume 54, Issue 7, 1 March 2020, Pages
961-980: DOI:
10.1177/0021998319870588
Gençer, F., Hamamcıoğlu-Turan, M., Aktaş,
E. “Investigation
of in-plane and out-of-plane wall behavior related to lateral loading depending
on wall profiles and opening types in Hellenistic Towers” Journal of the
Faculty of Engineering and Architecture of Gazi
University, 35(1), pp. 241-253, (2020). https://doi.org/10.17341/gazimmfd.458555
Yücetürk, K., Aktaş, E., Maden,
F., Gür, Ş., Mitropoulou,
C.C. “A
Case Study on the Selection of Optimum Loop Units for the Deployable Arch
Structures Exposed to Lateral and Non-uniform Gravity Loads” Procedia Manufacturing, 44, pp. 481-488,
(2020). https://doi.org/10.1016/j.promfg.2020.02.267
Hızal, Ç., Turan, G., Aktaş,
E., Ceylan, H. “A
mode shape assembly algorithm by using two stage Bayesian Fast Fourier
Transform Approach” Mechanical Systems and Signal Processing. 134 (2019)
106328. DOI:
10.1016/j.ymssp.2019.106328
Hamamcıoğlu-Turan, M., Aktaş, E., Mamaklı, F.S., Kaplan
Z. “Construction
techniques of Hayat Houses: Two case studies in the vicinity of İzmir”
ASCE Journal of Architectural Engineering
25(2) (June 2019). DOI:10.1061/(ASCE)AE.1943-5568.0000345
Mamaklı, F. S., Hamamcıoğlu-Turan, M.,
Aktaş, E., Vardaroğlu, M. “Conservation
aimed evaluation of a historical aqueduct in İzmir” ASCE Journal of Architectural Engineering
25(2) (June 2019). DOI:
10.1061/(ASCE)AE.1943-5568.0000353
Beylergil, B., Tanoğlu, M., Aktaş,
E. “Mode-I
fracture toughness of carbon fiber/epoxy composites interleaved with aramid
nonwoven fabrics" Steel and Composite Structures 31(2), April,25 2019, pages 113-123. DOI:
http://dx.doi.org/10.12989/scs.2019.31.2.113 .
Beylergil, B, Tanoğlu, M., Aktaş, E. “Poliamid
6/6 (Pa 66) Mikrofiberler ile Toklaştirilmiş Tabakali
Kompozitlerin Mod-I Delaminasyon
Direncinin İstatiksel Analizi”. Ömer Halisdemir Üniversitesi Mühendislik Bilimleri Dergisi, 8 (1), 429-435 (2019). DOI:
10.28948/ngumuh.517158.
Öztoprak, N., Güneş, M.D., Tanoğlu M.,
Aktaş, E., Eğilmez, Ö. O., Şenocak,
Ç., Kulaç,
G. “Developing
polymer composite-based leaf spring systems for automotive industry” Science
and Engineering of Composite Materials,
25(6): 1167–1176 (2018). DOI10.1515/secm-2016-0335
Beylergil
B, Tanoğlu, M., Aktaş, E. “Effect
of polyamide-6,6 (PA 66) nonwoven veils on the mechanical performance of carbon
fiber/epoxy composites”, Composite Structures, 194: 21-35 (2018).
DOI10.1016/j.compstruct.2018.03.097
Beylergil, B., Tanoglu, M., Aktaş, E.
“Enhancement
of Interlaminar Fracture Toughness of Carbon Fiber/Epoxy Composites Using
Polyamide 6/6 Electrospun Nanofibers” Journal of Applied Polymer Science Journal
of Applied Polymer Science Vol. 134, Issue 35, 45244 (2017).
Yar, M., Korkmaz, K., Kiper, G., Maden, F, Akgün, Y., Aktaş,
E. “A Novel Planar
Scissor Structure Transforming Between Concave and Convex Configurations” International Journal of Computational
Methods and Experimental Measurements, 5 (4): 442-450 (2017).
Beylergil, B., Tanoğlu, M.,
Aktaş, E. “Modification of Carbon
Fiber/Epoxy Composites By Polyvinyl Alcohol (PVA) Based Electrospun
Nanofibers” Advanced Composites
Letters 25(3):69-76 · July 2016.
Maden F., Aktaş, E., Korkmaz, K. “A
Novel Transformable Structural Mechanism for Doubly-Ruled Hypar
Surfaces” ASME Journal of Mechanical Design Vol. 137, No. 3, 14 pages,
2015. DOI:10.1115/1.4029231.
Teomete, E., Tayfur, G., Aktaş, E. (2012). “Estimation
of Mechanical Properties of Limestone Using Regression Analyses and ANN.” Cement
Wapno Beton Vol. 17
No.6, 373-389, Nov-Dec 2012.
Nichols, J.M., Seaver, M., Trickey,
S.T., Scandell,
K., Salvino,
L.W., Aktaş, E. “Real-time
Strain Monitoring of a Navy Vessel During Open Water Transit” Journal of Ship Research,Vol.54, No. 4,
225-230, December 2010.
Teomete, E., Aktaş, E. “Structural Analyses and Assessment of Historical Kamanlı Mosque in İzmir, Turkey” Journal of Performance of Constructed Facilities, Vol. 24, No. 4, 353-364, August 2010. doi:10.1061/(ASCE)CF.1943-5509.0000111.
Seaver, M., Aktaş, E., Trickey, S.T. “Quantitative Detection of
Low Energy Impact Damage in a Sandwich Composite Wing” Journal of Intelligent Material Systems and Structures, Vol. 21,
Issue 3, 297-308, February 2010. doi:10.1177/1045389X09347020.
Aktaş, E., Seaver, M., Nichols, J.M., Trickey, S.T., Davis, W.R. “The Influence of Low Energy Impacts on the Static and
Dynamic Response of a Foam Core Composite Wing” Journal of Intelligent Material Systems and
Structures, Vol. 20, Issue 11, 1351-1361, July 2009. doi:10.1177/1045389X08095184.
Korkmaz, A., Aktaş, E. “Probability
Based Seismic Analysis of R/C Frame Structures”, Journal of the Faculty of Engineering and Architecture of Gazi
University, Vol. 21, No. 1, 55-64, 2006. (in Turkish)
Aktas, E., Moses, F., Ghosn, M., “Cost
and Safety Optimization of Structural Design Specifications”, Journal of Reliability Engineering and
System Safety, Vol.73, 205-212, 2001. doi:10.1016/S0951-8320(01)00046-1
Aktas, E., Moses, F., “Reduced
Basis Eigenvalue Solutions for Damaged Structures”, Mechanics of Structures and Machines, Vol.26, No.1, 63-79, February
1998. doi:10.1080/08905459808945420.
Conference Papers
Mamaklı, F. S., Turan, M., Aktaş, E. “Cultural Asset Values and Conservation Problems of Vezirağa Aqueduct in Izmir” 9th. International Conference on Mathematics, Engineering, Natural and Medical Sciences, Morocco 23-26 Ocak 2020.
Kartav, O., Kangal, S., Tanoğlu, M., Aktaş, E., Artem, H.S. “Development and Modeling of Type-III Composite Overwrapped Pressure Vessels for Hydrogen Storage” October 2019. International porous and powder materials symposium and exhibition, PPM 2019, Marmaris, İzmir.
Yuceturk, K., Aktaş, E., Maden, F., Gür,Ş. “A Case Study on the Selection of Optimum Loop Units for the Deployable Arc Structures Exposed to Lateral and Non-uniform Gravity Loads”, November 2019, Conference: 1st International Conference on Optimization-Driven Architectural DesignAt: Amman, Jordan.
Kartav, O., Kangal, S., Artem, H.S., Aktaş, E., Tanoğlu, M.
“Investıgatıon of Hybrid Ply Effect on Burst Pressure Performance of
Composite Overwrapped Pressure Vessels” September 2018, Conference: 4.
International Ege Composite Materials Symposium 2018,
İzmir, Türkiye.
Politi, R., Aktaş, E., llal, M.E., “Project Planning and Management Using Building Information Modeling (BIM)” 13th International Congress on Advances in Civil Engineering, 12-14, September 2018, Çeşme, Turkey.
Arslan-Özgen,
G., Tanoğlu, M., Aktaş, E., Yücetürk,
K. “Development of Composite Drive Shaft Tube for Automotıve Industry”
18th European conference on composite materials (ECCM) 24-28 June, 2018,
Athens, Greece.
Uygun, F., Turan, M., Vardaroğlu,
M., Aktaş, E., “Karya, Alinda ve
Latmos’daki İki Helenistik Kulenin Yapısal Dayanımının
Değerlendirilmesi” 6th International Symposium
on Conservation and Consolidation of Historical Structures, 2-4 November, 2017,
Trabzon, Turkey.
Karimzada, N.A., Aktaş, E. “Performance-Based Seismic Design of Reinforced
Concrete Frame Buildings: A Direct Displacement Based Approach” 12th
International Advances in Civil Engineering 21-23 September 2016,
İstanbul, Turkey.
Beylergil, B., Aktaş, E., Tanoğlu, M., Artem,
H. S. “Optimal design of compressed
hydrogen storage vessels using multi-objective genetic algorithm” The 1st
International Conference on Materials Design and Applications 2016 (MDA 2016),
Porto, Portugal.
Kutlukaya, O., Aktaş, E, Castiglioni, C.A., Kanyılmaz,
A. “Restoration of a Stone Masonry Residence in Çeşme,
Izmir, Turkey” PROHITECH’14, 2nd International Conference on Protection of
Historical Constructions, May, 7-9 2014, Antalya, Turkey.
Aktaş,
E., Seaver, M., Nichols,
J.M., Trickey,
S.T. “Quantitative Detection of Low Energy Impact Damage in a Sandwich
Composite Wing”, Proceedings of SMASIS08, ASME Conference on Smart Materials,
Adaptive Structures and Intelligent Systems, Ellicott City, MD, October 28-30,
2008, paper 327, 13-19, 2008. doi:10.1115/SMASIS2008-327
Korkmaz,
A., Aktaş, E. “Load Factor Optimisation
of Turkish Seismic Design Code” CD Proceedings of the 4th ASRANet
Colloquium on Integrating Structural Analysis, Reliability & Risk, Athens,
Greece 25-27 June 2008.
Aktaş,
E., Seaver, M., Nichols,
J.M., Trickey,
S.T.
“Detecting Low Energy Impact Damage in a Sandwich Composite Wing”, IMAC – XXVI
Conference and Exposition on Structural Dynamics, Orlando, FL, February 4-7,
2008. CD-ROM Proceedings, paper 156, 9 pages, 2008.
Aktaş, E., Korkmaz, A. “Plastic Hinge Analysis Using Reduced Basis
Approximations” International Symposium on Advances in Earthquake &
Structural Engineering, October 24-26, 2007, Süleyman
Demirel University, Isparta
- Antalya, Turkey.
Korkmaz, A., Aktaş, E.,
Kayhan, A.
H. “Investigation of Nonstructural Components Behavior in Critical Facilities” International
Symposium on Advances in Earthquake & Structural Engineering, October
24-26, 2007, Süleyman Demirel
University, Isparta - Antalya, Turkey.
Aktaş, E., Seaver, M., Nichols, J.M., Trickey, S.T. “Detecting
Delamination and Core Crushing in a Sandwich Composite Wing” Proceedings of the
6th International Workshop on Structural Health Monitoring IWSHM07,
Stanford University, Stanford, CA, September 11-13, 2007 (Fu-Kuo Chang ed.), Vol. II, pp. 1799-1807.
Bozkurt, S.B., Sezgin, F.E., Eğilmez, O.Ö., Aktaş, E., Tanoğlu, M. “Composite Sandwich Structures; Experimental
Evaluation And Finite Element Analysis of Mechanical
Properties” Experimental Analysis of
Nano and Engineering Materials and Structures, Proceedings of the 13th
International Conference on Experimental Mechanics, Alexandroupolis,
Greece, July 1–6, 2007. CD-ROM Proceedings, paper 301, 8 pages, 2007.
Sezgin, F.E., Tanoğlu,
M., Eğilmez,
O.Ö., Aktaş, E. "Mechanical Behavior of
Composite Sandwich Structures", Symposium Proceedings of Polymer
Composites, İzmir, Turkey, November 2006, pp. 307 – 317 (In Turkish).
Korkmaz, A., Aktaş, E., Demir, F., Sarı, A. “Earthquake Risk Assessment Profile for Izmir Region,
Turkey”, Proceedings of the 7th International Conference on Advances
in Civil Engineering ACE 2006, Yildiz Technical University, Istanbul, Turkey,
October 11-13, 2006, ACE06-567.
Korkmaz, A., Aktaş, E. “Fragility Curves in Performance Based Design” Proceedings of the Earthquake Symposium Kocaeli 2005, Kocaeli , TURKEY, 23-25 March 2005, pp. 422-429 (In Turkish).
Teomete, E., Aktaş, E. “Structural Assessment of a Historical Masonry Structure: Urla Kamanlı Mosque”, Proceedings of the 6th International Conference on Advances in Civil Engineering ACE 2004, Boğaziçi University, Istanbul, TURKEY, 6-8 October 2004( Özturan, T., Yalçın, C., Tokmak, Y., Güngör, C. eds.), Vol. II, pp. 793-802.
Aktaş, E., “Extending Ferry-Borges
Method for Combination of Time Dependent Loads with Time-invariant Modelling
Uncertainties Using FORM”, 2nd ASRANet Colloquium
on Integrating Structural Reliability Analysis with Advanced Structural
Analysis, Barcelona, Spain 5-7 July 2004.
Aktas, E., Moses, F., Ghosn, M.,
“Structural Design Codes for Multiple Threats: A Reliability and Cost
Optimization Approach”, Structural Safety and Reliability - Proceedings of the
8th international conference, ICOSSAR
'01, Newport Beach, CA, USA, 17-22 June 2001. (Corotis,
R.B., Schuëller, G.I., and Shinozuka,
M., eds.), 2001.
Aktas, E., Moses, F., Ghosn,
M., “Calibration
of Load Factors using Reliability Based Cost Optimization”, Proceedings of
the 8th ASCE Joint Specialty Conference on
Probabilistic Mechanics and Structural Reliability, University of Notre Dame,
Notre Dame, Indiana, July 24-26, 2000. CD-ROM Proceedings (Kareem, Haldar, Spencer, and Johnson, eds.), paper PMC2000-042, 6
pages, 2000.
Özhan, E., Uras, A., Aktaş, E., “Turkish Legislation Pertinent to Coastal Zone
Management Issues”, 1st International Conference on the
Mediterranean Coastal Environmental, pp. 333-346, Antalya Turkey, November,
1993.
Reports
Determination
of the Essentials for the Analyses of Historical Masonry Structures;
A Case Study: Urla Kamanlı Mosque(in
Turkish), submitted to TUBİTAK, No: 102I065, 2004.
Dissertation
“Structural
Design Code Calibration Using Reliability Based Cost Optimization” Ph. D.
Dissertation, University of Pittsburgh, December, 2001. Advisor: Fred Moses
Thesis
“Approximated
Eigenvalue Solutions for Damaged Structures Using Reduced Basis Vectors” M.S.
Thesis, University of Pittsburgh, December, 1996. Advisor: Fred Moses
Current Graduate Students:
Ertuğrul Türker UZUN “Bayesian Updating of Structural Models and Reliability Assessment Based on Structural Health Monitoring Data” - Ph. D. in Civil Engineering Program.
Kutay YÜCETÜRK “Integration of Structural Health Monitoring to Reliability Based Inspection and Maintenance for Deteriorating Structures” (co-advisor Assist. Prof. Dr. Alper KANYILMAZ, Politecnico di Milano) - Ph. D. in Civil Engineering Program.
Nisar Ahmad KARİMZADA “Probabilistic Performance-Based Optimum Seismic Design of Reinforced Concrete Structures” (co-advisor Assoc. Prof. Dr. Sadik Can GİRGİN Dokuz Eylül University) - Ph. D. in Civil Engineering Program
Former Graduate Students:
Nurullah BEKTAŞ (07/2020) “Reliability Based Seismic Assessment of Unanchored Circular Steel Storage Tanks” (M.Sc. in Civil Engineering Program)
İbrahim BARAN (07/2019) “Evaluation of Behavior Factors of Steel Moment Resisting Frames” (co-advisor Dr. Alper KANYILMAZ, Politecnico di Milano) - M.Sc. in Civil Engineering Program.
Esra ŞAHİN (07/2019) “Structural Analyses and Assessment of Historical Çardak Caravanserai in Denizli” (co-advisor Assoc. Prof. Dr. Mine TURAN) – M. Sc. in Civil Engineering Program.
Ruti Ruth POLITI (12/2018) “Project Planning and Management using Building Information Modelling (BIM)” (co-advisor Assoc. Prof. Dr. Emre İLAL) – M. Sc. in Civil Engineering Program.
Feyza DURMUŞLAR (12/2018) “Structural Conservation of Cevher Paşa Bath in Kale, Denizli” (served as co-advisor, advisor Assoc. Prof. Dr. Mine TURAN) – M. Sc in Architectural Restoration.
Bertan BEYLERGİL (12/2017) “Toughening of carbon fiber based composites with electro-spun fabric layers” (served as co-advisor, advisor Prof. Dr. Metin TANOĞLU) – Ph. D. in Mechanical Engineering Program.
Fatma Sezgi MAMAKLI (07/2016) “Identification of Vezirağa Aqueduct in İzmir as a Historical Monument” (served as co-advisor, advisor Assoc. Prof. Dr. Mine TURAN)
Nisar Ahmad KARIMZADA (06/2015) “Performance Based Design
of Reinforced Concrete Frame Structures: Direct Displacement Based Design
Approach”
Nahit ÖZTOPRAK (06/2014) “Design of Composite-Based Leaf Spring Systems for Automotive Sector” (served as co-advisor, advisor Prof. Dr. Metin TANOĞLU).
Mert
BOYLU (07/2005) “A Benefit/Cost Analysis for the Seismic Rehabilitation of
Existing Reinforced Concrete Buildings in Izmir”
Egemen
TEOMETE (08/2004) “Finite Element Modeling of Historical Masonry
Structures; Case Study: Urla Kamanlı
Mosque”