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| http://dx.doi.org/10.1073/pnas.30.10.308 | DOI Listing |
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Experimental Study on Mechanical Performance of Single-Side Bonded Carbon Fibre-Reinforced Plywood for Wood-Based Structures.
Materials (Basel)
January 2025
Department of Integrated Design and Tribology Systems, Faculty of Mechanics and Technology, Rzeszów University of Technology, ul. Kwiatkowskiego 4, 37-450 Stalowa Wola, Poland.
In addition to the traditional uses of plywood, such as furniture and construction, it is also widely used in areas that benefit from its special combination of strength and lightness, particularly as a construction material for the production of finishing elements of campervans and yachts. In light of the current need to reduce emissions of climate-damaging gases such as CO, the use of lightweight construction materials is very important. In recent years, hybrid structures made of carbon fibre-reinforced plastics (CFRPs) and metals have attracted much attention in many industries.
View Article and Find Full Text PDFNewton-Simpson-based predictor-corrector methods for milling chatter stability prediction.
Sci Rep
January 2025
School of Mechatronic Engineering, Xi'an Technological University, Xi'an, 710021, China.
Milling chatter, a form of self-excited vibration, can cause significant damage in machining and manufacturing processes. By selecting appropriate milling parameters, milling chatter can be effectively mitigated without sacrificing milling efficiency. Within the framework of the semi-discretization scheme, this paper introduces the Newton-Simpson-based predictor-corrector methods to compute milling stability lobe diagrams.
View Article and Find Full Text PDFExceptional-Point Sensors Offer No Fundamental Signal-to-Noise Ratio Enhancement.
Phys Rev Lett
June 2024
LIGO Laboratory, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA.
Exceptional-point (EP) sensors exhibit a square-root resonant frequency bifurcation in response to external perturbations, making them appear attractive for sensing applications. However, there is an open debate as to whether or not this sensitivity advantage is negated by additional noise in the system. We settle this debate by showing that increased fundamental noises of quantum and thermal origin in EP sensors, and in particular self-excited (or PT-symmetric) EP sensors, negate the sensitivity benefit.
View Article and Find Full Text PDFSound generation mechanisms in a collapsible tube.
J Acoust Soc Am
May 2024
FLOW Research Center, Department of Engineering Mechanics, KTH Royal Institute of Technology, Stockholm, SE-10044, Sweden.
Article Synopsis
- Collapsible tubes are used to investigate how sound is produced in the human respiratory system, focusing on airflow characteristics during different collapse states.
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Bridging two insect flight modes in evolution, physiology and robophysics.
Nature
October 2023
School of Physics, Georgia Institute of Technology, Atlanta, GA, USA.
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- Insects have two main ways to fly: some use their muscles at the same time as their wings move, while others use special muscles that can keep moving even when not activated by their brain.
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