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A gripper for delicate edible manipulation
Cardin-Catalan, Daniel; Morales, Antonio; Llop-Harillo, Immaculada; Pérez-González, Antonio; del Pobil, Angel P. Elsevier (2023-09-25)The general manipulation of delicate edible products requires of specific grippers able to firmly grasp these kind of products without damaging them. To address this problem we follow a soft and variable-stiffness approach. ... -
A modified elastic foundation contact model for application in 3D models of the prosthetic knee
Pérez-González, Antonio; Fenollosa Esteve, Carlos; Sancho-Bru, Joaquin L.; Sanchez-Marin, Francisco; Vergara, Margarita; Rodríguez Cervantes, Pablo Jesús Elsevier (2008)Different models have been used in the literature for the simulation of surface contact in biomechanical knee models. However, there is a lack of systematic comparisons of these models applied to the simulation of a common ... -
Affordable 3D-printed tendon prosthetic hands: Expectations and benchmarking questioned
Andres-Esperanza, Javier; Iserte-Vilar, Jose L.; Llop-Harillo, Immaculada; Pérez-González, Antonio Elsevier (2021-09-10)The popularization of 3D-printing has allowed enhancing affordable prostheses for persons with amputations in developing countries, yet manufacturers are not subjected to any control from any medical regulatory authority. ... -
An introductory study of common grasps used by adults during performance of activities of daily living
Vergara, Margarita; Sancho-Bru, Joaquin L.; Gracia-Ibáñez, Verónica; Pérez-González, Antonio (2015-07-06)This paper presents the results of a descriptive survey on human grasps. Sixty-four videos were selected to represent tasks performed in the main areas of activities of daily living (ADL) (personal care, meal preparation, ... -
Analysis of the effect of design parameters and their interactions on the strength of dental restorations with endodontic posts, using finite element models and statistical analysis
González-Lluch, Carmen; Pérez-González, Antonio Taylor & Francis (2016)Many previous studies, both in vitro and with model simulations, have been conducted in an attempt to reach a full understanding of how the different design parameters of an endodontically restored tooth affect its mechanical ... -
Anthropomorphism Index of Mobility for Artificial Hands
Llop-Harillo, Immaculada; Pérez-González, Antonio; Gracia-Ibáñez, Verónica Hindawi (2019-07-28)The increasing development of anthropomorphic artificial hands makes necessary quick metrics that analyze their anthropomorphism. In this study, a human grasp experiment on the most important grasp types was undertaken in ... -
Anthropomorphism Indexes of the Kinematic Chain for Artificial Hands
Llop-Harillo, Immaculada; Pérez-González, Antonio; Andres-Esperanza, Javier Springer (2020-05-23)Anthropomorphic hands have received increasing research interest in the fields of robotics and prosthetics. But it is not yet clear how to evaluate their anthropomorphism. Similarity in the kinematic chain is essential to ... -
Benchmarking anthropomorphic hands through grasping simulations
Llop-Harillo, Immaculada; Iserte, José Luis; Pérez-González, Antonio Oxford University Press (2022-02-25)In recent decades, the design of anthropomorphic hands has been developed greatly improving both cosmesis and functionality. Experimentation, simulation, and combined approaches have been used in the literature to assess ... -
Comparison of Grasping Performance of Tendon and Linkage Transmission Systems in an Electric-Powered Low-Cost Hand Prosthesis
Andres-Esperanza, Javier; Pérez-González, Antonio; Rubert, Carlos; Fuentes, José; Sospedra, Bruno The American Society of Mechanical Engineers (ASME) (2018-12-24)The popularization of fused deposition modelling technology and open-source microcontrollers have permitted the explosion of electric hand prostheses that can be designed, shared, built and operated at a low-cost, under ... -
Dataset of Tactile Signatures of the Human Right Hand in Twenty-One Activities of Daily Living Using a High Spatial Resolution Pressure Sensor
Cepriá Bernal, Javier; Pérez-González, Antonio MDPI (2021)Successful grasping with multi-fingered prosthetic or robotic hands remains a challenge to be solved for the effective use of these hands in unstructured environments. To this end, currently available tactile sensors need ... -
Effect of the Thumb Orientation and Actuation on the Functionality and Performance of Affordable Prosthetic Hands: Obtaining Design Criteria
Andres-Esperanza, Javier; Iserte-Vilar, Jose L.; Llop-Harillo, Immaculada; Pérez-González, Antonio Biomimetics (2022-12)The advent of 3D printing technologies has enabled the development of low-cost prosthetic underactuated hands, with cables working as tendons for flexion. Despite the particular relevance to human grasp, its conception in ... -
Experimental strength of restorations with fibre posts at different stages, with and without using a simulated ligament
Pérez-González, Antonio; González-Lluch, Carmen; Sancho-Bru, Joaquin L.; Rodríguez Cervantes, Pablo Jesús; Barjau Escribano, Amaya; Forner Navarro, Leopoldo Wiley (2012)The aim of this study was to analyse the strength and failure mode of teeth restored with fibre posts under retention and flexural-compressive loads at different stages of the restoration and to analyse whether including ... -
Fatigue Analysis of NiTi Rotary Endodontic Files through Finite Element Simulation: Effect of Root Canal Geometry on Fatigue Life
Roda-Casanova, Victor; Pérez-González, Antonio; Zubizarreta, Alvaro; Faus-Matoses, Vicente MDPI (2021-12-03)This article describes a numerical procedure for estimating the fatigue life of NiTi endodontic rotary files. An enhanced finite element model reproducing the interaction of the endodontic file rotating inside the root ... -
Grasp modelling with a biomechanical model of the hand
Sancho-Bru, Joaquin L.; Mora, Marta Covadonga; León Pinzón, Beatriz Elena; Pérez-González, Antonio; Iserte-Vilar, Jose L.; Morales, Antonio Taylor & Francis (2012-05)The use of a biomechanical model for human grasp modelling is presented. A previously validated biomechanical model of the hand has been used. The equilibrium of the grasped object was added to the model through the ... -
Grasping Ability and Motion Synergies in Affordable Tendon-Driven Prosthetic Hands Controlled by Able-Bodied Subjects
Llop-Harillo, Immaculada; Pérez-González, Antonio; Andres-Esperanza, Javier Frontiers Media (2020-08-26)Affordable 3D-printed tendon-driven prosthetic hands are a rising trend because of their availability and easy customization. Nevertheless, comparative studies about the functionality of this kind of prostheses are ... -
Grip force and force sharing in two different manipulation tasks with bottles
Cepriá Bernal, Javier; Pérez-González, Antonio; Mora, Marta Covadonga; Sancho-Bru, Joaquin L. Taylor & Francis (2017)Grip force and force sharing during two activities of daily living were analysed experimentally in 10 right-handed subjects. Four different bottles, filled to two different levels, were manipulated for two tasks: transporting ... -
Hand posture prediction using neural networks within a biomechanical model
Mora, Marta Covadonga; Sancho-Bru, Joaquin L.; Pérez-González, Antonio In-Tech (2012)This paper proposes the use of artificial neural networks (ANNs) in the framework of a biomechanical hand model for grasping. ANNs enhance the model capabilities as they substitute estimated data for the experimental ... -
Hand-transmitted vibration in power tools: Accomplishment of standards and users' perception
Vergara, Margarita; Sancho-Bru, Joaquin L.; Rodríguez Cervantes, Pablo Jesús; Pérez-González, Antonio Elsevier (2008)This work presents the results of the measurements of hand-arm vibration carried out in a field survey. This survey attempted to detect the main usability problems of handheld power tools in industry. Hand-arm vibration ... -
Influence of Cross-Section and Pitch on the Mechanical Response of NiTi Endodontic Files under Bending and Torsional Conditions—A Finite Element Analysis
Roda-Casanova, Victor; Pérez-González, Antonio; Zubizarreta, Alvaro; Faus-Matoses, Vicente MDPI (2022-05-08)In this article, the effects of cross-section and pitch on the mechanical response of NiTi endodontic files is studied by means of finite element analyses. The study was conducted over a set of eight endodontic rotary ... -
Influence of material and diameter of pre-fabricated posts on maxillary central incisors restored with crown
González-Lluch, Carmen; Rodríguez Cervantes, Pablo Jesús; Sancho-Bru, Joaquin L.; Pérez-González, Antonio; Barjau Escribano, Amaya; Vergara, Margarita; Forner Navarro, Leopoldo Wiley (2009)Numerous research works have studied the effect of post-design parameters on the mechanical behaviour of restored teeth without reaching any clear conclusions. Previous works by the authors ascertained the effect of material ...