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Machines, Volume 9, Issue 2

2021 February - 24 articles

Cover Story: The study focuses on performance tests carried out on a low-cost and 3D printed prosthetic hand, named “Federica”. The prosthesis can perform an adaptive grasp function using a single servomotor, which actuates all the five fingers by inextensible tendons. A cylindrical handlebar with a built-in load cell was used to measure the prosthesis grip force. Force sensors were also applied on selected phalanxes for mapping the grasp force distribution. Moreover, by measuring the actuator tendon displacement and estimating its exerted force, the energy efficiency of the prosthesis and the works required for hand closing–opening were computed. The grip force was enough to support the user in daily life actions, and the hysteresis for a complete cycle of closing–opening was lower than that of many commercial prostheses. View this paper.
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Articles (24)

  • Article
  • Open Access
35 Citations
4,215 Views
21 Pages

Study of Tank Containers for Foodstuffs

  • Aurelio Liguori,
  • Andrea Formato,
  • Arcangelo Pellegrino and
  • Francesco Villecco

21 February 2021

In this study, we examined a tank container for foodstuff that is generally used for the transport of foodstuffs. With the aid of the “ANSYS R17.0” program code, a numerical model of the tank container for foodstuffs was realized. Further, to validat...

  • Article
  • Open Access
1 Citations
4,458 Views
16 Pages

Design for the Automation of an AMBU Spur II Manual Respirator

  • Carles Domènech-Mestres,
  • Elena Blanco-Romero,
  • Albert de la Fuente-Morató and
  • Manuel Ayala-Chauvin

21 February 2021

This article shows the design of a device to automatize an Ambu Spur II manual respirator. The aim of this compassionate medicine device is to provide an emergency alternative to conventional electric respirators—which are in much shortage—during the...

  • Article
  • Open Access
21 Citations
5,322 Views
32 Pages

20 February 2021

The addition of omnidirectional capability and modularization to conveyor systems is an exciting and trending topic in current conveyor research. The implementation of omnidirectional modular conveyors is foreseen as mandatory in the future of convey...

  • Article
  • Open Access
8 Citations
5,387 Views
17 Pages

17 February 2021

This study aimed to develop an extrusion and pultrusion system for producing carbon fiber-filled thermoplastic pellets. The extruder delivers a plastic melt to an impregnation die in sufficient volume and is pulled out along with the fibers. The fibe...

  • Article
  • Open Access
6 Citations
4,820 Views
16 Pages

15 February 2021

Assessing passenger cars’ dynamic performance is a critical aspect for car industries, due to its impact on the overall vehicle safety evaluation and the subjective nature of the involved handling and comfort metrics. Accordingly, ISO standards, such...

  • Article
  • Open Access
17 Citations
3,683 Views
24 Pages

Segmented Embedded Rapid Defect Detection Method for Bearing Surface Defects

  • Linjian Lei,
  • Shengli Sun,
  • Yue Zhang,
  • Huikai Liu and
  • Hui Xie

14 February 2021

The rapid development of machine vision has prompted the continuous emergence of new detection systems and algorithms in surface defect detection. However, most of the existing methods establish their systems with few comparisons and verifications, a...

  • Article
  • Open Access
8 Citations
7,785 Views
27 Pages

Probabilistic Condition Monitoring of Azimuth Thrusters Based on Acceleration Measurements

  • Riku-Pekka Nikula,
  • Mika Ruusunen,
  • Joni Keski-Rahkonen,
  • Lars Saarinen and
  • Fredrik Fagerholm

10 February 2021

Drill ships and offshore rigs use azimuth thrusters for propulsion, maneuvering and steering, attitude control and dynamic positioning activities. The versatile operating modes and the challenging marine environment create demand for flexible and pra...

  • Article
  • Open Access
20 Citations
8,861 Views
23 Pages

Analytical Study on the Cornering Behavior of an Articulated Tracked Vehicle

  • Antonio Tota,
  • Enrico Galvagno and
  • Mauro Velardocchia

9 February 2021

Articulated tracked vehicles have been traditionally studied and appreciated for the extreme maneuverability and mobility flexibility in terms of grade and side slope capabilities. The articulation joint represents an attractive and advantageous solu...

  • Review
  • Open Access
12 Citations
7,642 Views
16 Pages

Human–Machine Interface in Transport Systems: An Industrial Overview for More Extended Rail Applications

  • Simon Enjalbert,
  • Livia Maria Gandini,
  • Alexandre Pereda Baños,
  • Stefano Ricci and
  • Frederic Vanderhaegen

8 February 2021

This paper provides an overview of Human Machine Interface (HMI) design and command systems in commercial or experimental operation across transport modes. It presents and comments on different HMIs from the perspective of vehicle automation equipmen...

  • Communication
  • Open Access
7 Citations
4,479 Views
12 Pages

7 February 2021

In order to meet the defect-detection requirements of chips in high-precision surface mount technology (SMT) equipment widely used in the electronic industry, a chip appearance defect-detection method based on multi-order fractional discrete wavelet...

  • Article
  • Open Access
1 Citations
2,907 Views
18 Pages

7 February 2021

The article considers the problems of the magnetic field distribution, generated by a power electric cable at the micro-tunnel-boring shield arrangement site by numerical modeling with a further full-scale device model experiment. The impact of forei...

  • Article
  • Open Access
5 Citations
5,779 Views
18 Pages

5 February 2021

The variable combined brake system (VCBS) is a mechanism for motorcycles to simultaneously activate the front and rear brake systems by using one brake lever or pedal. The purpose is to reduce the risk of rollover accidents due to misuse of the front...

  • Article
  • Open Access
7 Citations
3,530 Views
38 Pages

Development and Research of Crosshead-Free Piston Hybrid Power Machine

  • Viktor Shcherba,
  • Viktor Shalay,
  • Evgeniy Nosov,
  • Evgeniy Pavlyuchenko and
  • Ablai-Khan Tegzhanov

5 February 2021

This article considers the development and research of a new design of crosshead-free piston hybrid power machine. After verification of a system of simplifying assumptions based on the fundamental laws of energy, mass, and motion conservation, as we...

  • Communication
  • Open Access
5 Citations
3,872 Views
10 Pages

5 February 2021

This paper systematically summarized the technical state of art and research results on the motion error of a linear guideway, corrected some misconceptions, and further clarified the relationship between the straightness error of the guide rail itse...

  • Article
  • Open Access
33 Citations
4,938 Views
16 Pages

4 February 2021

In this work, a comprehensive control strategy for obstacle avoidance in redundant manipulation is presented, consisting of a combination of off-line path planning algorithms with on-line motion control. Path planning allows the avoidance of fixed ob...

  • Article
  • Open Access
24 Citations
5,465 Views
21 Pages

3 February 2021

Manipulation of heavy objects in industries is very necessary, but manual manipulation is tedious, adversely affects a worker’s health and safety, and reduces efficiency. On the contrary, autonomous robots are not flexible to manipulate heavy objects...

  • Article
  • Open Access
1 Citations
3,633 Views
13 Pages

3 February 2021

Experiments with a cam-type clamp tool were carried out to overcome the difficulty of transporting and installing large-diameter mono-piles for offshore wind turbines. Using the experiments method to design a small wedge-type clamping mechanism and u...

  • Article
  • Open Access
2,979 Views
15 Pages

2 February 2021

The dimensioning of general-purpose machines such as manipulators involves the solution of a number of preliminary issues. The determination of reference external loads and the identification of machine configurations that give the maximum internal l...

  • Article
  • Open Access
15 Citations
3,103 Views
22 Pages

1 February 2021

Recently, the studies of soft actuators have been getting increased attention among various fields. Soft actuators are very safe for fragile objects and have an affinity to humans because they are composed of flexible materials. A miniature flexible...

  • Communication
  • Open Access
9 Citations
2,613 Views
9 Pages

Impact of Electronic Radiation on the Morphology of the Fine Structure of the Surface Layer of R6M5 Steel

  • Bauyrzhan Rakhadilov,
  • Aidar Kengesbekov,
  • Laila Zhurerova,
  • Rauan Kozhanova and
  • Zhuldyz Sagdoldina

27 January 2021

In recent decades, great efforts have been made to significantly improve the performance characteristics of high-speed steel using various surface hardening techniques. Electron beam modification is engaging because it has an exceptionally high therm...

  • Article
  • Open Access
28 Citations
6,704 Views
19 Pages

Evaluation of Grip Force and Energy Efficiency of the “Federica” Hand

  • Daniele Esposito,
  • Sergio Savino,
  • Chiara Cosenza,
  • Emilio Andreozzi,
  • Gaetano Dario Gargiulo,
  • Caitlin Polley,
  • Giuseppe Cesarelli,
  • Giovanni D’Addio and
  • Paolo Bifulco

27 January 2021

The actual grip force provided by a hand prosthesis is an important parameter to evaluate its efficiency. To this end, a split cylindrical handlebar embedding a single-axis load cell was designed, 3D printed and assembled. Various measurements were m...

  • Article
  • Open Access
2 Citations
3,964 Views
19 Pages

Effect of Rotor Geometry on Bending Stiffness Variation

  • Risto Viitala,
  • Tuomas Tiainen and
  • Raine Viitala

26 January 2021

Bending stiffness variation (BSV) is a common problem causing vibration in large rotating machinery. BSV describes lateral bending stiffness and its variation as a function of the rotational angle. It has been observed that BSV causes excitation exac...

  • Article
  • Open Access
10 Citations
4,066 Views
23 Pages

20 January 2021

A polar crane is a large-scale special lifting equipment operated in a nuclear power plant. To address the precise locating control problem of a polar crane with the center of gravity shifting, with cross-coupling, and with external disturbance, an e...

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Machines - ISSN 2075-1702