A5053667572- Insect and Arachnid Ecology and Behavior
- Neurobiology and Insect Physiology Research
- Advanced Materials and Mechanics
- Adhesion, Friction, and Surface Interactions
- Insect and Pesticide Research
- Plant Surface Properties and Treatments
- Modular Robots and Swarm Intelligence
- Force Microscopy Techniques and Applications
- Cellular and Composite Structures
- Nail Diseases and Treatments
- Surface Modification and Superhydrophobicity
- Polymer Surface Interaction Studies
- Engineering Technology and Methodologies
- Manufacturing Process and Optimization
- Metal and Thin Film Mechanics
- Soft Robotics and Applications
- Animal Behavior and Reproduction
- Fungal Infections and Studies
- Additive Manufacturing and 3D Printing Technologies
- Fossil Insects in Amber
- Mechanics and Biomechanics Studies
- Infectious Diseases and Mycology
- Amphibian and Reptile Biology
- biodegradable polymer synthesis and properties
- Plant and animal studies
Kiel University
2020-2024
University of Guilan
2017-2020
Islamic Azad University Rasht Branch
2019
Insect cuticle is a biological composite with high degree of complexity in terms both architecture and material composition. Given the complex morphology many insect body parts, finite-element (FE) models play an important role analysis interpretation biomechanical measurements, taken by either macroscopic or nanoscopic techniques. Many previous studies show that nanoindentation measurements this layered very challenging. To develop accurate FE models, it particular interest to understand...
Nature has evolved structures with high load-carrying capacity and long-term durability. The principles underlying the functionality of such structures, if studied systematically, can inspire design more efficient engineering systems. An important step in this process is to characterize material properties structure under investigation. However, direct mechanical measurements on small complex-shaped biological samples involve numerous technical challenges. To overcome these challenges, we...
In this paper, a new concept of extra-durable and sustainable wind turbine blades is presented. The two critical materials science challenges the development energy now are necessity to prevent degradation for several decades, and, on other side, provide solution recyclability sustainability blades. preliminary studies by DTU Wind, it was demonstrated that practically all typical blade mechanisms (e.g., coating detachment, buckling, spar cap/shell adhesive joint degradation, trailing edge...
<italic>Pachyrhynchus</italic>weevils are equipped with a sclerotised endocuticle, which is surprisingly stiffer than their exocuticle.
The exoskeleton of nearly all insects consists a flexible core and stiff shell. transition between these two is often characterized by gradual change in the stiffness. However, functional significance this stiffness gradient unknown. Here combining finite-element analysis multi-objective optimization, we simulated mechanical response about 3000 unique gradients elastic modulus to normal contacts. We showed that materials with exponential could achieve an optimal balance load-bearing capacity...
Abstract Elongated rostra (snouts) are remarkable features of many female weevils. The Curculio glandium uses the snout to excavate channels in acorns oviposit. Considering slenderness rostrum, excavation solid substrates without buckling is a challenging task from both engineering and biological points view. Here we aimed examine roles material properties morphology rostrum its resistance. We employed microscopy techniques, non-destructive characterisation finite element (FE) modelling shed...
Geometry and material are two key factors that determine the functionality of mechanical elements under a specific boundary condition. Optimum combinations these fulfil desired behaviour. By exploring biological systems, we find widespread spiral-shaped with various geometries properties functioning different conditions load cases. Although spirals work towards wide range goals, some them used as nature's solution to compactify highly extensible prolonged structures. Characterizing...
Metamaterials with adjustable, sometimes unusual properties offer advantages over conventional materials predefined mechanical in many technological applications. A group of metamaterials, called modular metamaterials or metastructures, are developed through the arrangement multiple, mostly similar building blocks. These structures can be assembled using prefabricated modules and reconfigured to promote efficiency functionality. Herein, a novel metastructure is by taking advantage high...
Abstract Sperm removal behaviour (SRB) is known in many animals, and male genital structures are often involved the SRB, e.g. rubbing female genitalia vigorously. However, it remains unclear how those function properly without severe damage during SRB. In present study, we focused on bushcricket Metaplastes ornatus examined biomechanics of structures, their SRB as a model case. During an initial phase mating, males this species thrust subgenital plate with hook-like spurs microscopic spines...
Abstract Inspired by natural spiral curves, this study aims to present a strategy find compromise between extensibility and load‐bearing capacity in structures made from polylactic acid (PLA) as brittle material. Herein, four geometrically distinct double‐spiral modules are fabricated using three‐dimensional (3D) printer subjected tension, in‐plane sliding, out‐of‐plane sliding assess both their mechanical performance. Subsequently, modular spiral‐based metastructure is developed tested...