Effect of lamina orientation, crack severity, and fillers on dynamic parameters of hybrid composite cantilever beam with double transverse cracks

Abstract

Modern-day research in composite material development primarily focuses on tailoring combinations by proportions of constituent materials and monitoring the changes in their targeted properties. In line with this trend, a new class of glass fiber reinforced polymer hybrid composite beam of size 600 mm × 50 mm × 6 mm is fabricated by adding graphene (average particle size:10 μm), and flyash (average particle size: 60 μm). The dynamic behavior of the hybrid beam by introducing two transverse cracks at different positions with varying crack depths is studied by employing analytical, finite-element, and experimental approaches. The dimensionless relative natural frequencies of the cracked/faulty hybrid beam obtained by the proposed methods are compared with the intact hybrid beam. Also, a comparison is made for the hybrid beam with a single crack. An increase in relative crack depth resulted in an increase in values of dimensionless compliances. Further, the effect of fiber orientation and lamina stacking sequence on the dynamic parameters of the hybrid beam are also analyzed. The introduction of the second crack induces higher nonlinearity in bending modes of vibration.

Mathematical simulation modeling analysis of sub-sea tunnel blasting based on grey correlation

“…where: 𝑘 = 10; 𝑟 , 𝑟 , 𝑟 are relevant parameters, this paper takes 𝑟 = 𝑟 , 𝑟 = 12𝑟 ; 𝜇 = 0.25 is the rock Poisson's ratio [35][36][37][38]. By calculating the above formula and referring to existing literature [39][40][41], the peak value of the blasting load is less than 20 MPa, as shown in Fig. 5.…”

Laser cladding powder flow field detection system based on ISR optimization algorithm

“…Sahoo S. et al designed a hybrid beam made of glass epoxy composite material mixed with fly ash and graphene. Simulated experimental results showed that the designed material had significantly improved stiffness compared to traditional materials [7][8]. Compared to traditional methods, LC technology has wider selectivity, smaller thermal deformation, higher coating density, strong adaptability and flexibility, and shorter cost and cycle.…”

Determination of natural frequencies of non‐uniform aluminum beams coated with functionally graded material

“…While research on regular beams covered with functionally graded materials is rare, there are no studies on the natural frequencies of irregular non-uniform beams, coated with functionally graded materials [18][19][20][21][22][23][24]. Some research is done on nano beams and coated beams as well [25][26][27][28][29][30].…”