A multiscale model for damage progression and detection in piezo/pyroelectric composite laminates

Bahei–El–Din, Yehia A.; Micheal, Amany

doi:10.1016/j.mechmat.2017.07.011

Cited by 5 publications

(4 citation statements)

References 32 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The matrix tensile strength is taken as 100 MPa and shear strength of 87.5 MPa. 32 The interface strength is taken as 31.72 MPa, and the ultimate interface shear strength is taken as 46.36 MPa. 33 The stress and strain distribution along the length of the tube are presented in Figures 6 and 7.…”

Section: Model Verificationmentioning

confidence: 99%

“…For each structure element that suffers any stage of damage, the final stress field can be extracted from ABAQUS to be implemented in the post processing stage. Back to the standalone laminate analysis, the fiber stresses can be obtained from equation ( 2) and the electrical displacement D 33 of the PZT fibers employed in all plies can be obtained using equation (32). At the end of the loading path, and for the selected locations in the plate structure shown in Figure 13, the electrical displacement D 33 for the electrically active fibers is obtained and compared with the undamaged values.…”

Section: Plate Problemmentioning

confidence: 99%

See 1 more Smart Citation

Implementation of multiscale mechanisms in finite element analysis of active composite structures

Micheal

Bahei–El–Din

2022

Journal of Composite Materials

Self Cite

View full text Add to dashboard Cite

Interrogation of composite structures for inherent damage is investigated implementing three-tier analysis scheme. The analysis starts at the structure level where a general-purpose Finite Element code ABAQUS is employed to obtain the stress field in the second level of analysis that is the composite laminate. A special material routine is prepared to propagate the local fields to the individual plies and hence to the third level of analysis which is the microstructure modelling of the composite. Through the third level of analysis, interface damage between fiber and matrix is checked implementing a certain failure criteria. The interaction between the different length scales; that are, structure, macro, and micro scales, is implemented using the non-mechanical strains caused by damage. Embedment of electrically active fibers in the laminate serves as a tool to interrogate the structure for inherent damage through the electric displacement generated due to the electro-mechanical coupling. To verify the developed multi-scale model, a comparison with the experimental results of a tube problem under combined internal pressure and axial load is presented. The results show good agreement in both the undamaged and damaged state. As an application, a plate with a hole under biaxial load is solved. The output includes not only the structure global behavior during damage but also detailed information about the location of damage within the structure, the plies that exhibit damage, type of damage and the fiber/matrix debonded length. Comparison between the electric displacement of the active fibers in the undamaged and damaged states is presented as well.

show abstract

Section: Model Verificationmentioning

confidence: 99%

Section: Plate Problemmentioning

confidence: 99%

Implementation of multiscale mechanisms in finite element analysis of active composite structures

Micheal

Bahei–El–Din

2022

Journal of Composite Materials

Self Cite

View full text Add to dashboard Cite

show abstract

“…* Authors to whom any correspondence should be addressed. structural failure or long-term structural deterioration, maximizing the safety of such structures and their operation [7][8][9][10][11]. The selection of sensors is a critical part of the SHM system.…”

Section: Introductionmentioning

confidence: 99%

“…On the other hand, piezoelectric sensors have simple structures, wide frequency-range of respond and fast responding speed. And they are rarely affected by temperature compared with other sensors, so piezoelectric sensors are widely used in SHM [4][5][6][7][8][9][10][11][12][13][14][15][16][17][18]. Piezoelectric ceramic sensors are commonly used in SHM systems, such as lead zirconate titanate (PZT) ceramic sensor, which have the advantages of fast responding speed, good linearity and low price [4][5][6][7][12][13][14][15][16][17][18].…”

Section: Introductionmentioning

confidence: 99%

PVDF piezoelectric sensor based on solution blow spinning fibers for structural stress/strain health monitoring

Zou,

Zhu,

Chen

et al. 2024

Smart Mater. Struct.

View full text Add to dashboard Cite

Strain monitoring is of great significance to the maintenance and safe operation of engineering structures. To address the shortcomings of piezoelectric ceramics such as high inflexibility and brittleness, in this study, PVDF fibrous films were prepared by a safe and efficient solution blow spinning technique. In the case of similar β-phase content, the preparing efficiency of PVDF fibers by the solution blow spinning method increased by about 8~10 times compared to that of electrospinning method in our previous work. The fibers with average diameter of 0.79 μm had the highest β-phase content, around 83%. A flexible piezoelectric fiber sensor with simple design for structural strain monitoring was prepared based on the PVDF fibers. The sensor responded well to strains as low as 23 με, better than commercial strain gauges, with a high response accuracy of 1.11 mV/με. And the piezoelectric properties of the sensors could charge a 4.7 μF capacitor to 3V in 40 s, offering the potential for low-cost, self-powered structural health monitoring.

show abstract

Multiscale crack band model for eigenstrain based reduced order homogenization

Bhattacharyya

Basu

2020

Comput Mech

View full text Add to dashboard Cite

A multiscale model for damage progression and detection in piezo/pyroelectric composite laminates

Cited by 5 publications

References 32 publications

Implementation of multiscale mechanisms in finite element analysis of active composite structures

Implementation of multiscale mechanisms in finite element analysis of active composite structures

PVDF piezoelectric sensor based on solution blow spinning fibers for structural stress/strain health monitoring

Multiscale crack band model for eigenstrain based reduced order homogenization

Contact Info

Product

Resources

About