Experimental study on the fatigue behaviour of honeycomb sandwich panels with artificial defects

Abbadi, Ahmed; Tixier, C.; Gilgert, J.; Azari, Z.

doi:10.1016/j.compstruct.2014.10.020

Cited by 60 publications

(18 citation statements)

References 20 publications

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“…Abbadi et al investigated the fatigue behaviors of undamaged and damaged specimens by using four-point bending loads. The results obtained indicated that the damage formed had no effect on the static strength of specimens 19 . Schubel et al stated that difficult-to-detect damage like delamination formed in sandwich composites after impact caused significant reductions in the strength of specimens 20 .…”

Section: Introductionmentioning

confidence: 90%

The Flexural Fatigue Behavior of Honeycomb Sandwich Composites Following Low-Velocity Impacts

Solmaz¹,

Topkaya

2020

Preprint

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This study experimentally investigated the flexural fatigue behaviors of honeycomb sandwich composites subjected to low velocity impact damage by considering the type and thickness of the face sheet material, the cell size and the core height parameters. First, the static strength of undamaged specimens was determined by three-point bending loads, and calculating their fatigue lives; secondly, the fatigue lives of the specimens damaged by low velocity impact tests were then determined. Increasing the face sheet thickness and core height increased the flexural strength, while increasing the cell size decreased the flexural strength. Low velocity impact damage decreased the flexural strength and fatigue lives but increased the damping ratio for all specimens.

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Section: Introductionmentioning

confidence: 90%

The Flexural Fatigue Behavior of Honeycomb Sandwich Composites Following Low-Velocity Impacts

Solmaz¹,

Topkaya

2020

Preprint

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“…Density (kg/m 3 ) E/q (Nm/kg) r/q (Nm/kg) C/q (Nm/kg) two types of defects: Brinell balls and Drilling holes were investigated [59]. The data also compare aluminum and aramid fibers under fatigue loading.…”

Section: Material Cell Size (Mm)mentioning

confidence: 99%

Synthesis and characterization of natural fiber reinforced polymer composites as core for honeycomb core structure: A review

Zaini

Azaman

Jamali

et al. 2018

Jnl of Sandwich Structures & Materials

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Researchers have worked on variety of natural fibers reinforced with polymer composites using different parameters to come up with various recommendations. The investigation involved aspects of composition materials and mechanical properties of natural fiber composites. The satisfactory results of natural fiber composites have encouraged researchers to delve deeper into the abilities of natural fiber composite in the form of a core structure. The potentiality of utilizing natural fiber composite in core design has wide potential in modern industries. This paper presents a review on natural fibers and polymer matrices commonly used in core fabrication, core design, fabricating processes of cores, and mechanical properties of cores. Ongoing research of rice husk composites to be fabricated in the form of honeycomb core structures is also discussed.

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“…On the other hand, many efforts have been made to experimentally or numerically study the fatigue behavior of sandwich panels with face/core interfacial cracks 11–18 , core cracks 19 , inserts 20 , face wrinkle defects 21 , artificial defect 22 , or weld notches 23 . Moreover, the influences of some loading variables, such as variable amplitudes of cyclic loading 24–25 , load ratios 26–27 , load frequencies 28 and low-velocity impact 29 on the fatigue strength of sandwich structures have been also investigated.…”

Section: Introductionmentioning

confidence: 99%

Combined Temperature and Moisture Effect on the Monotonic and Fatigue Strengths of Sandwich Beams with Glass-Polypropylene Faces and Aluminum Foam Cores

Jen

Chang

2018

Polymers and Polymer Composites

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Recently, the sandwich structures with thermoplastic faces and metal foam cores have been received much attention in the automobile, aerospace and naval industries. Since the material properties of the polymer-based faces and adhesive films employed in the sandwich structures are sensitive to the temperature and humidity, the knowledge of the environmental effect on the mechanical properties are important to the design and application of such structures. Therefore, the hygrothermal effect on the static and fatigue bending strengths of the sandwich beams with glass-polypropylene faces and aluminum foam cores were experimentally analyzed in the present study. The monotonic and cyclic four-point bending tests were conducted under four environmental conditions, i.e., 25°C/45% RH, 25°C/75% RH, 50°C/45% RH, and 50°C/75% RH, to evaluate the influence of combined temperature and humidity on the strengths against the static and cyclic flexural loads. Experimental results show that the humidity has tiny effect on the static and fatigue strengths when the specimens were tested at fixed temperature. However, the temperature plays an important role in the environmental effect because the monotonic and fatigue strengths of the studied sandwich specimens decrease significantly when the ambient temperature rises from 25 to 50°C. Furthermore, under four considered environmental conditions, two crack systems, the core shear ones and the face/core interfacial ones, were observed both in the monotonic and cyclic tests. The development of interfacial cracks strongly depends on the environmental variables. Accordingly the interfacial cracks play an important role in the static and fatigue strengths of the studied sandwich structures.

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Experimental study on the fatigue behaviour of honeycomb sandwich panels with artificial defects

Cited by 60 publications

References 20 publications

The Flexural Fatigue Behavior of Honeycomb Sandwich Composites Following Low-Velocity Impacts

The Flexural Fatigue Behavior of Honeycomb Sandwich Composites Following Low-Velocity Impacts

Synthesis and characterization of natural fiber reinforced polymer composites as core for honeycomb core structure: A review

Combined Temperature and Moisture Effect on the Monotonic and Fatigue Strengths of Sandwich Beams with Glass-Polypropylene Faces and Aluminum Foam Cores

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