DEVELOPMENT OF CRITERION FOR STRENGTH RESIDUAL PREDICTION OF COMPOSITE STRUCTURES DAMAGED BY IMPACT

• Grant number: 12/01047-8
• Support Opportunities: Scholarships in Brazil - Doctorate
• Start date: October 01, 2012
• End date: January 31, 2016
• Field of knowledge: Engineering - Aerospace Engineering - Aerospace Structures
• Principal Investigator: Volnei Tita
• Grantee: Ricardo de Medeiros
• Host Institution: Escola de Engenharia de São Carlos (EESC). Universidade de São Paulo (USP). São Carlos , SP, Brazil

Abstract

Structural health monitoring is an area of growing interest using innovative approaches. Other hand, the maintenance and repair tasks represent about one quarter of the operating costs of commercial aircraft. Therefore, SHM system installed in the structure not only provides greater airworthiness, but also maximizing the numbers of suitable inspection periods for airplanes. Thus, SHM system can replace the traditional maintenance plan, reducing the airplane operational costs and preventing needless maintenances. The SHM system should inform, all the time, during the structure life, a diagnostic of the material state as well as the structure condition, which should be in agreement with specified by the initial structural project. However, the material state and the structure condition modify in function of the time due to aging, environment effects and loadings in service. Based on the complete history occurred, the SHM system can also perform a prognostic of the structure, for example, a prediction of residual strength. Considering this scenario, the main objective of this work consists on developing residual strength criterion for composite structures damaged by impact loading. For the development of the criterion, it will be necessary: to identify and to localize damage, as well as to calculate the severity of the damage and to estimate the residual strength of the composite structure. To achieve these goals, it is used to research Methodology based on three main groups of activities: (1) Before Impact Test; (2) During Impact Test (real-time) and (3) After Impact Test. In the first group (Before Impact Test), consists of literature reviews related to mathematical model used for SHM systems, which use sensors/actuators piezoelectric. Then, theoretical dynamic analyses of composite structure will be carried out by program ABAQUS, aided by "macro" in Python language. Piezoelectric sensors/actuators are attached on suitable positions of intact composite plates. After that, experimental analyses (modal tests) will be performed in intact composite specimens with attached piezoelectric sensors/actuators. The consistency of the computational models is evaluated comparing numerical results with experimental results for intact structures. If the consistency is acceptable, then move into the second group of activities. In this group (During Impact Test), finite element analyses of composite structures under low velocity impact will be carried out, using program ABAQUS and UMAT and/or VUMAT subroutines in Fortran language. After that, composite plates with attached piezoelectric sensors/actuators will be impacted under low velocity. In the third group (After Impact), there will be a comparison between numerical and experimental results in order to verify the consistency of the computational models for damaged structures. Thus, a method to localize and to evaluate damage severity will be proposed, using experimental and numerical results from intact and damaged composite structures. Finally, the results provided by the proposed method will be used to evaluate the residual strength of damaged composite structures. This criterion consists on determining the 4-point bending maximum loading, which will be supported by damaged plate by impact test.

Scientific publications

(13)

(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)

DA COSTA, ROMEU R. C.; SATO, EDUARDO S.; RIBEIRO, MARCELO L.; DE MEDEIROS, RICARDO; VIEIRA, ANDRE F. C.; GUEDES, RUI M.; TITA, VOLNEI. Polyurethane derived from castor oil reinforced with long cotton fibers: Static and dynamic testing of a novel eco-friendly composite material. JOURNAL OF COMPOSITE MATERIALS, v. 54, n. 22, MAR 2020. (12/01047-8, 15/13844-8)

DE MEDEIROS, RICARDO; VANDEPITTE, DIRK; TITA, VOLNEI. Structural health monitoring for impact damaged composite: a new methodology based on a combination of techniques. STRUCTURAL HEALTH MONITORING-AN INTERNATIONAL JOURNAL, v. 17, n. 2, p. 185-200, MAR 2018. (15/15221-8, 12/01047-8)

SARTORATO, MURILO; DE MEDEIROS, RICARDO; TITA, VOLNEI. A finite element formulation for smart piezoelectric composite shells: Mathematical formulation, computational analysis and experimental evaluation. COMPOSITE STRUCTURES, v. 127, p. 185-198, SEP 1 2015. (10/13596-0, 12/01047-8)

FLOR, FELIPE RENDEIRO; DE MEDEIROS, RICARDO; TITA, VOLNEI. Numerical and Experimental Damage Identification in Metal-Composite Bonded Joint. JOURNAL OF ADHESION, v. 91, n. 10-11, SI, p. 863-882, 2015. (12/01047-8, 12/03645-0)

DE MENEZES, VANESSA G. S.; SOUZA, GABRIEL S. C.; VANDEPITTE, DIRK; TITA, VOLNEI; DE MEDEIROS, RICARDO. Defect and damage detection in filament wound carbon composite cylinders: A new numerical-experimental methodology based on vibrational analyses. COMPOSITE STRUCTURES, v. 276, NOV 15 2021. (19/15179-2, 15/15221-8, 12/01047-8)

DOS SANTOS SOUZA, LUIZ FERNANDO; VANDEPITTE, DIRK; TITA, VOLNEI; DE MEDEIROS, RICARDO. Dynamic response of laminated composites using design of experiments: An experimental and numerical study. MECHANICAL SYSTEMS AND SIGNAL PROCESSING, v. 115, p. 82-101, JAN 15 2019. (15/15221-8, 12/01047-8)

DE MEDEIROS, RICARDO; SARTORATO, MURILO; VANDEPITTE, DIRK; TITA, VOLNEI. A comparative assessment of different frequency based damage detection in unidirectional composite plates using MFC sensors. Journal of Sound and Vibration, v. 383, p. 171-190, NOV 24 2016. (10/13596-0, 12/01047-8)

TITA, VOLNEI; DE MEDEIROS, RICARDO; MARQUES, FLAVIO D.; MORENO, MARIANO E.. Effective properties evaluation for smart composite materials with imperfect fiber-matrix adhesion. JOURNAL OF COMPOSITE MATERIALS, v. 49, n. 29, p. 3683-3701, DEC 2015. (12/01047-8, 12/03645-0)

DE MEDEIROS, RICARDO; RODRIGUEZ-RAMOS, REINALDO; GUINOVART-DIAZ, RAUL; BRAVO-CASTILLERO, JULIAN; OTERO, JOSE A.; TITA, VOLNEI. Numerical and analytical analyses for active fiber composite piezoelectric composite materials. Journal of Intelligent Material Systems and Structures, v. 26, n. 1, p. 101-118, JAN 2015. (12/01047-8, 12/03645-0)

BRITO-SANTANA, HUMBERTO; DE MEDEIROS, RICARDO; RODRIGUEZ-RAMOS, REINALDO; TITA, VOLNEI. Different interface models for calculating the effective properties in piezoelectric composite materials with imperfect fiber-matrix adhesion. COMPOSITE STRUCTURES, v. 151, p. 70-80, SEP 1 2016. (12/01047-8)

POSSENTI, KLEISON A.; DE MENEZES, VANESSA G. S.; VANDEPITTE, DIRK; TITA, VOLNEI; DE MEDEIROS, RICARDO. Detection of changes in dynamic characteristics of composite structures using Kriging metamodeling procedure: Experimental and computational analysis. MECHANICS OF ADVANCED MATERIALS AND STRUCTURES, v. N/A, p. 18-pg., 2023-08-08. (15/15221-8, 12/01047-8)

FLOR, FELIPE RENDEIRO; DE MEDEIROS, RICARDO; TITA, VOLNEI. Numerical and Experimental Damage Identification in Metal-Composite Bonded Joint. JOURNAL OF ADHESION, v. 91, n. 10-11, p. 20-pg., 2015-01-01. (12/03645-0, 12/01047-8)

DE MEDEIROS, R.; VANDEPITTE, D.; TITA, V.; SAS, P; MOENS, D; VANDEWALLE, A. A new SHM methodology applied on composite plates. PROCEEDINGS OF ISMA2016 INTERNATIONAL CONFERENCE ON NOISE AND VIBRATION ENGINEERING AND USD2016 INTERNATIONAL CONFERENCE ON UNCERTAINTY IN STRUCTURAL DYNAMICS, v. N/A, p. 12-pg., 2016-01-01. (15/15221-8, 12/01047-8)

Academic Publications

(References retrieved automatically from State of São Paulo Research Institutions)

MEDEIROS, Ricardo de. Development of a criterion for predicting residual strength of composite structures damaged by impact loading. 2016. Doctoral Thesis - Universidade de São Paulo (USP). Escola de Engenharia de São Carlos (EESC/SBD) São Carlos.