34. Choi, Hee-Wook; Kim Hyung-Jin; Kim,Sung-Keun; Na, Wongi S; An overview of drone applications in the construction industry. Drones 7(8), MDPI. 2023
33. Kim, Hyung-Jin; Na, Wongi S; Development of piezoelectric impedance-based technique for rapid compressive strength measurement of mortar specimen using artificial neural network. Under review. 2023
32. Kim, Yi-Seul; Na, Wongi S; Implementation of biomimicry for detecting composite
structure damage using impedance based non-destructive testing method. Applied Sciences 13(876), MDPI. 2023
30. Kim, Yi-Seul; Na, Wongi S; Damage detecting moving device based on electromechanical impedance technique for debonding detection in composite structures. Journal of Engineering Research DOI:10.36909/jer.15489. Kuwait Journal. 2022
29. Seo, Dong-Woo; Jung, Kyu-San; Kim, Yi-Seul; Kim, Hyung-Jin; Na, Wongi S; Development of a new temporary attachment techniques for detecting debonding of composite structure using impedance based non-destructive testing method. Applied Sciences 11(22), MDPI. 2021
28. Kim, Sung-Keun; Jang, Jung-Woo; Na, Wongi S; Automatic creation of heuristic-based truck movement paths for construction equipment control. Applied Sciences 11(13), MDPI. 2021
27. Na, Wongi S; A portable bolt-loosening detection system with
piezoelectric-based nondestructive method and artificial neural networks. Structural Health Monitoring 14759217211008619, Sage Publications. 2021
26. Na, Wongi S; Bolt loosening detection using impedance based
non-destructive method and probabilistic neural network technique with minimal
training data. Engineering Structures 226, 111228. Elsevier. 2021.
25. Na, Wongi S; History data free piezoelectric based non-destructive
testing technique for debonding detection of composite structures. Composite Structures 226, 111225.
Elsevier. 2019.
24. Na, Wongi S; Park, Ki-Tae; Toward Creating a Portable
Impedance-Based Nondestructive Testing Method for Debonding Damage Detection of
Composite Structures. Applied Sciences
9(15), 3189. MDPI. 2019.
23. Na, Wongi S; Baek, Jongdae; Piezoelectric Impedance-Based
Non-Destructive Testing Method for Possible Identification of Composite Debonding
Depth. Micromachines 10(9), 621.
MDPI. 2019.
22. Tawie, Rudy; Park, Hee Beom; Baek, Jongdae; Na, Wongi S; Damage
detection performance of the electromechanical impedance (emi) technique with
various attachment methods on glass fibre composite plates. Sensors 19(5), 1000. MDPI. 2019.
21. Na, Wongi S; Low cost technique for detecting adhesive debonding
damage of glass epoxy composite plate using an impedance based non-destructive
testing method. Composite Structures
189, 99-106. Elsevier. 2018.
20. Na, Wongi S; Baek, Jongdae; A review of the piezoelectric
electromechanical impedance based structural health monitoring technique for
engineering structures. Sensors
18(5), 1307. MDPI. 2018.
19. Na, Wongi S; Seo, Dong-Woo; Kim, Byeong-Cheol; Park, Ki-Tae; Effects
of applying different resonance amplitude on the performance of the
impedance-based health monitoring technique subjected to damage. Sensors 18(7), 2267. MDPI. 2018
18. Na, Wongi S; Park, Ki-Tae; A cost-effective impedance-based
structural health monitoring technique for steel structures by monitoring
multiple areas. Journal of Intelligent
Material Systems and Structures 28(2), 154-162. Sage Publications. 2017.
17. Na, Wongi S; Distinguishing crack damage from debonding damage of
glass fiber reinforced polymer plate using a piezoelectric transducer based
nondestructive testing method. Composite
Structures 159, 517-527. Elsevier.
2017.
16. Na, Wongi S; Baek, Jongdae; Impedance-based non-destructive testing
method combined with unmanned aerial vehicle for structural health monitoring
of civil infrastructures. Applied Sciences 7(1), 15. MDPI. 2017.
15. Park, Eunil; Kim, Ki Joon; Kwon, Sang Jib; Han, Taeil; Na, Wongi S;
Del Pobil, Angel P; Economic feasibility of renewable electricity generation
systems for local government office: Evaluation of the Jeju special
self-governing Province in South Korea. Sustainability
9(1), 82. MDPI. 2017.
14. Na, Wongi S; Possibility of detecting wall thickness loss using a
PZT based structural health monitoring method for metal based pipeline facilities.
NDT & E International 88, 42-50.
Elsevier. 2017.
13. Na, Wongi S; Baek, Jongdae; Adhesive Defect Monitoring of Glass
Fiber Epoxy Plate Using an Impedance-Based Non-Destructive Testing Method for
Multiple Structures. Sensors 17(6),
1439. MDPI. 2017.
12. Na, Wongi S; Baek, Jongdae; Impedance Based Health Monitoring
Technique with Probabilistic Neural Network for Possible Wall Thinning
Detection of Metal Structures. Journal of
Sensors 2017, Hindawi. 2017.
11. Na, Wongi S; Lee, Hyeonseok; Experimental investigation for an
isolation technique on conducting the electromechanical impedance method in
high-temperature pipeline facilities. Journal
of Sound and Vibration 383, 210-220. Elsevier. 2016.
10. Na, Wongi S; Progressive damage detection using the reusable
electromechanical impedance method for metal structures with a possibility of
weight loss identification. Smart
Materials and Structures 25(5), 55039. IOP Publishing. 2016.
9. Yang, BJ; Na, Wongi S; Jang, Jeong Gook; Kim, HK; Lee, Haeng-Ki;
Thermo-mechanical analysis of road structures used in the on-line electric
vehicle system. Structural Engineering
and Mechanics 53(3), 519-536. Techno-press. 2015.
8. Ha, SK; Na, Wongi S; Bang, YK; Lee, Haeng-Ki; An experimental study on
sag-resistance ability and applicability of sprayed FRP system on vertical and
overhead concrete surfaces. Materials and
Structures 48, 21-33. Springer. 2015.
7. Na, Wongi S; Lee, Haeng-Ki; Neural network approach for damaged area
location prediction of a composite plate using electromechanical impedance
technique. Composites Science and
Technology 88, 62-68. Elsevier. 2013.
6. Na, Wongi S; Lee, Haeng-Ki; A multi-sensing electromechanical impedance
method for non-destructive evaluation of metallic structures. Smart Materials and Structures 22(9),
95011 IOP Publishing. 2013.
5. Ha, Seong-Kug; Na, Wongi S; Lee, Haeng-Ki; Bond characteristics of
sprayed FRP composites bonded to concrete substrate considering various
concrete surface conditions. Composite
Structures 100, 270-279. Elsevier. 2013.
4. Na, Wongi S; Lee, Haeng-Ki; Steel wire electromechanical impedance method
using a piezoelectric material for composite structures with complex surfaces. Composite Structures 98, 79-84.
Elsevier. 2013.
3. Na, Wongi S; Tawie, Rudy; Lee, Haeng-Ki; Electromechanical impedance
method of fiber-reinforced plastic adhesive joints in corrosive environment
using a reusable piezoelectric device. Journal
of Intelligent Material Systems and Structures 23(7), 737-747. Sage
Publications. 2012.
2. Na, Wongi S; Lee, Haeng-Ki; A technique for improving the damage
detection ability of the electro-mechanical impedance method on concrete
structures. Smart Materials and
Structures 21(8), 85024. IOP Publishing 2012.
1. Na, Wongi S; Lee, Haeng-Ki; Resonant frequency range utilized
electro-mechanical impedance method for damage detection performance
enhancement on composite structures. Composite
Structures 94(8), 2383-2389. Elsevier. 2012.
7. 시설물의 노후화 수준 평가 시스템 (등록번호:1021240620000), 2020.6
6. 사장케이블의 진동 저감을 위한 부착형 관성마찰댐퍼 (등록번호: 1021117930000), 2020.5
5. AVM 카메라 기반 터널 내부 고속 측정 시스템 및 그의 터널 내부 고속 측정 방법 (등록번호: 1021064520000), 2020.4
4. 시설물의 노후화 수준 평가를 위한 데이터 확보 시스템 및 그 방법 (등록번호: 1021029570000), 2020.4
3. 무선통신-기반 이동식 단일통행차선 교통신호 제어 시스템 (등록번호: 1020829440000), 2020.2
2. 교량의 진동을 이용한 승하강식 자가발전 가로등 시스템 및 그 제어방법 (등록번호: 1019970990000), 2019.7
1. 드론을 활용한 진동 기반 구조물 손상 감지 시스템 및 그 방법 (등록번호: 1017183100000), 2017.3
