Academic Research & Projects
01
Real-Time Structural Health Monitoring
My Ph.D. research focuses on real-time structural health monitoring using advanced statistical methods. I develop hierarchical sensor data fusion and roving sensor network frameworks, particularly applied to the retrofitting of complex structures and bridges.
02
Dynamic Behavior of Historical Monuments
A significant portion of my research is dedicated to understanding the long-term dynamic response of historical structures. My studies extensively monitor how atmospheric condition variations and earthquakes affect monumental structures like the Hagia Sophia and Ottoman minarets
03
Urban Resilience & Seismic Hazard Analysis
As a researcher in major TÜBİTAK projects, I work on developing urban resilience strategies for the Marmara Region based on innovative data production models. This includes 3D physics-based and stochastic simulation methods for region-specific ground motion estimation.
04
Seismic Response of High-Rise Buildings
My collaborative research includes the structural health monitoring-based seismic response assessment of complex modern architectures, such as a 53-story twisted high-rise building under severe earthquake scenarios.
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- Carlos S. Oliveira, Eser Çakti, Vitor Camacho and Emrullah Dar, “Revisiting the Frequency Laws for Ottoman Minarets. Analysis of Uncertainties” International Journal of Architectural Heritage, 2022.
- Hakan Süleyman, Eser Çaktı, Emrullah Dar, “Investigating site-specific parameters for seismic hazard analysis in Büyükçekmece district of Istanbul: field study and HVSR analysis.” Bull Earthquake Eng 23, 2025.
- Emrullah Dar, Eser Çaktı, “Long-term effects of atmospheric parameter variations on historical structures: the case of Hagia Sophia in Istanbul “, International Journal of Architectural Heritage, 2025.
- Emrullah Dar, Tarık Tufan, Selahattin Akalp, and Ferit Yardımcı. “A Hierarchical Sensor Data Fusion and Roving Sensor Network Framework for Structural Health Monitoring: Application to Bridge Retrofitting”, Sensors 26, 2026.
- Emrullah Dar, Tarık Tufan, Selahattin Akalp, Ferit Yardımcı, “A Methodological Framework for Reliable Damping Estimation in Retrofitted Structures with Closely Spaced Modes”, Karaelmas Fen ve Mühendislik Dergisi. (In Review).
- Emrullah Dar, Eser Çaktı, “Long-term effects of atmospheric parameter variations on historical structures: the case of Hagia Sophia in Istanbul”, International Journal of Architectural Heritage. (In Review).
- Emre Gönülcü, Yavuz Durgun, Emrullah Dar, Ahmet Anıl Dindar, Engin Orakdöğen, “Structural Health Monitoring-Based Seismic Response Assessment of a 53-Story Twisted High-Rise Building during the 2025 Istanbul Earthquake”, The Structural Design of Tall and Special Buildings. (In Review).
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Conference Papers:
- Eser Çaktı, Emrullah Dar, “Dynamic Response Characteristics of Hagia Sophia Under Earthquakes and Atmospheric Conditions”, 8th National Conference on Earthquake Engineering, Istanbul Technical University, Istanbul, May 11-15, 2015.
- Eser Çaktı, Emrullah Dar, Gülen Uncu, “Recent Studies on Earthquake Performance Assessment of Hagia Sophia in Istanbul”, The Sixth International Conference on Structural Engineering, Mechanics and Computation, Cape Town, South Africa, September 5-7, 2016.
- E. Çaktı, Ö. Saygılı, E. Dar, T. Ercan, “Seismic Behavior of The Edirnekapi Mihrimah Sultan Mosque in Istanbul”, 6th ECCOMAS Thematic Conference on Computational Methods in Structural Dynamics and Earthquake Engineering, Rhodes Island, Greece, June 15–17, 2017.
- Eser Çaktı, Emrullah Dar, Taylan Cemgil, Burak Kurutmaz, “Use of Machine Learning Techniques in Structural Health Monitoring Systems”, 4th International Conference on Earthquake Engineering and Seismology, Anadolu University, Eskişehir, October 11-13, 2017.
- E. Dar, E. Çaktı, “Dependence of Hagia Sophia’s Modal Damping Ratios on Atmospheric Effects”, International Symposium on Structural Health Monitoring and Nondestructive Testing (SHM-NDT 2018), Saarbrücken, Germany, October 4-5, 2018.
- E. Dar, E. Çaktı, “Long-Term Mode Shape Variations of Hagia Sophia with Environmental Factors”, 5th International Conference on Smart Monitoring, Assessment and Rehabilitation of Civil Structures, Potsdam, Germany, August 27–29, 2019.
- E. Dar, E. Çaktı, “Time-Dependent Variation of Dynamic Parameters of Hagia Sophia”, 5th International Conference on Earthquake Engineering and Seismology (5ICEES), Ankara, Turkey, October 8-11, 2019.
- Dar, E., Şafak, E., “Earthquake Performance of Cevizlibağ and İncirli Metrobus Overpasses”, 2nd International Disaster and Resilience Congress “Resilience of Metropolitan Cities”, Eskişehir Technical University, October 13-15, 2020.
- Dar, E., Çaktı, E., “Machine Learning Applications in Structural Health Monitoring Systems”, 2nd International Disaster and Resilience Congress “Resilience of Metropolitan Cities”, Eskişehir Technical University, October 13-15, 2020.
Poster Presentations:
- Eser Cakti, Emrullah Dar, “Long-term Dynamic Response of Hagia Sophia in Istanbul to Earthquakes and Atmospheric Conditions”, International Workshop on Structural Health Monitoring, Stanford University, September 1-3, 2015.
- Eser Çaktı, Erdal Şafak, Emrullah Dar, “Response of Four Tall and Slender Structures in Istanbul to a Long-Distance Earthquake”, 16th World Conference on Earthquake Engineering, Santiago, Chile, January 9-13, 2017.
- E. Çaktı, E. Şafak, E. Dar, “Examples of Observed Response of Tall Structures in Istanbul to Long-Distance Earthquakes”, 2017 Annual Meeting Seismological Society of America, Denver, Colorado, April 18-20, 2017.
- E. Dar, E. Çaktı, “Vibration Based Identification of Historical Structures by Machine Learning for Dynamic Events and Atmospheric Conditions”, European Geosciences Union General Assembly 2018, Vienna, Austria, April 8–13, 2018.
- E. Dar, E. Çaktı, “Prediction of Superstructure Responses to Ground Motion by Statistical Methods”, The 36th General Assembly of The European Seismological Commission, Valletta, Malta, September 2-7, 2018.
Oral Presentations:
- Karin Sesetyan, Mine Betul Demircioglu, Emrullah Dar, Özge Zülfikar, “Building up a prototype of a macroseismic database for Turkey”, 4th International Colloquium on Historical Earthquakes and Macroseismology, Vienna, Austria, May 2-3, 2016.
- Eser Çaktı, Erdal Şafak, Emrullah Dar, Nesrin Yenihayat, “Observations on the Structural Response of two Historical Structures from Earthquake and Explosion Recordings”, 8th European Workshop on Structural Health Monitoring, Bilbao, Spain, July 5-8, 2016.
- Karin Sesetyan, Mine Betul Demircioglu, Özge Zülfikar Fercan, Emrullah Dar, Nilgün Merve Çağlar, “Recent progress on the compilation of a macro seismic data base for Turkey”, 5th International Colloquium Historical Earthquakes, Paleoseismology, Neotectonics and Seismic Hazard, Hannover, Germany, October 11-13, 2017.
- Emrullah Dar, Eser Çaktı, “Artificial Learning Applications in Structural Health Monitoring Systems”, 2nd International Disaster and Resilience Congress (idRc 2020), Eskişehir, Turkey, October 13-15, 2020.
- Emrullah Dar, Erdal Şafak, “Earthquake Performance of Cevizlibağ and İncirli Metrobüs Overpasses”, 2nd International Disaster and Resilience Congress (idRc 2020), Eskişehir, Turkey, October 13-15, 2020.
- Eser Çakti, Karin Sesetyan, Ufuk Hancilar, Merve Caglar, Emrullah Dar, Hakan Suleyman, Fatma Sevil Malcioglu, and Tugce Tetik, “30 October 2020 Samos-Sigacik Earthquake: On Strong Ground Motion and Local Site Amplification”, The General Assembly 2021 of the European Geosciences Union (vEGU21: Gather Online).
- Hancilar, U., Dede, S. O., Sesetyan, K., Cakti, E., Dar, E., Erturk, S. O., Kafadar, N., Koca, C., Korkmaz, A., Malcioglu, F. S., Suleyman, H., Tetik, T., Uncu, G., Yenihayat, N., and Yolcu, A.: Rapid Estimation of Spatial Distributions of Building Damages in the 30 October 2020 Aegean Sea Earthquake, EGU General Assembly 2021, online, April 19–30, 2021, EGU21-16186, https://doi.org/10.5194/egusphere-egu21-16186, 2021.
- Eser Çaktı, Tülay Ercan, Emrullah Dar, “Application of laser scanning technique in earthquake protection of Istanbul’s historical heritage buildings”, 19th EGU General Assembly, EGU2017, proceedings from the conference held April 23-28, 2017 in Vienna, Austria, p.13639.
- Çaktı, E., Dar, E., Uncu, G. (2019). Recent Studies on Earthquake Performance Assessment of Hagia Sophia in Istanbul: Recent Developments. In book: Seismic Isolation, Structural Health Monitoring, and Performance Based Seismic Design in Earthquake Engineering (pp.195-204).
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- Technopark Company Manager: Yapı Checkup Ltd. Sti, Mersin University Technopark (April 2024 – August 2026).
- TÜBİTAK 1001 Project Scholar: Development of Urban Resilience Strategies Based on Innovative Data Production Models and Quantitative and Qualitative Earthquake Risk Analysis in the Marmara Region (Project Code: 121M831).
- TÜBİTAK 1001 Project Scholar: Determination of Ground Motion Intensity Parameters That Can Be Observed in Istanbul Province Using Three-Dimensional Physics-Based and Stochastic Simulation Methods (Project Code:121M733).
- UKRI GCRF – Tomorrow Cities: Ensuring the transition from disaster management to multi-hazard, risk-oriented planning and decision-making processes for cities in low- and middle-income countries.
- EU Funded Project – RISE: Real-time Earthquake Risk Reduction for a Resilient Europe.