Browsing by Author "0000-0003-3167-5732"
Now showing items 1-20 of 138
-
A comparison of the performance of two advanced restraint systems in frontal impacts
López Valdés, Francisco José; Juste Lorente, Oscar; Pipkorn, Bengt; García Muñoz, Isabel; Sunnevang, Cecilia; Dahlgren, M.; Alba López, Juan José (01/09/2014)Objective: The goal of the study is to compare the kinematics and dynamics of the THOR dummy in a frontal impact under the action of 2 state-of-the-art restraint systems. Methods: Ten frontal sled tests were performed with ... -
A methodology to estimate the kinematics of pediatric occupants in frontal impacts
López Valdés, Francisco José; Seacrist, Thomas; Arbogast, Kristy .B.; Balasubramanian, Sriram; Maltese, Matthew R.; Tanji, Hiromasa; Higuchi, Kazuo; Kent, Richard W. (01/05/2012)<p><strong>Objective:</strong></p> The goal of this article is to propose a new methodology to estimate the sagittal plane displacement of the head, spine, and pelvis of a 6-year-old (6YO) occupant during a high-speed ... -
A methodology to obtain kinematic corridors for pediatric occupants in frontal impacts
López Valdés, Francisco José; Seacrist, Thomas; Balasubramanian, Sriram; Maltese, Matthew R.; Arbogast, Kristy .B.; Tanji, Hiromasa; Higuchi, Kazuo; Kent, Richard W. (Biomedical Engineering Society of Singapore; Global Enterprise for Micromechanics and Molecular Medi (Singapur, Singapur), 01/08/2010)Pediatric Anthropomorphic Test Devices (ATD) provide a reasonable approximation predicting maximum head excursion. However, the exact trajectory followed by the human head and the flexible human spine cannot be replicated ... -
A new HBM simulation based approach for improved thorax dummy injury criteria
Eggers, Andre; Mroz, Krystoffer; Pipkorn, Bengt; López Valdés, Francisco José; Peldschus, SteffenTo assess occupant safety in a crash test, dummy criteria relating the dummy measurement to injury risk are needed. The development of these criteria and functions are usually based on matched dummy and Post Mortem Human ... -
A parametric study of hard tissue injury prediction using finite elements: consideration of geometric complexity, sub-failure material properties, CT-thresholding, and element characteristics
Arregui-Dalmases, Carlos; Pozo de Dios, Eduardo del; Duprey, Sonia; López Valdés, Francisco José; Lau, Anthony; Subit, Damien; Kent, Richard W. (Sin editorial (Berna, Suiza), 17/09/2008)This study quantifies the sensitivity of finite element-predicted fracture in the clavicle to several parameters. Clavicles were harvested from 14 donors (age range 14-56 years). Quasistatic axxal compression tests were ... -
A parametric study of hard tissue injury prediction using finite elements: consideration of geometric complexity, subfailure material properties, CT-thresholding and element characteristics
Arregui-Dalmases, Carlos; Pozo de Dios, Eduardo del; Duprey, Sonia; López Valdés, Francisco José; Lau, Anthony; Subit, Damien; Kent, Richard W. (09/06/2010)Objective: The objectives of this study were to examine the axial response of the clavicle under quasistatic compressions replicating the body boundary conditions and to quantify the sensitivity of finite element predicted ... -
A pilot analysis of crash severity of electric passenger cars in Spain (2016–2020)
Sánchez Merchante, Luis Francisco; Martín de Argila Lorente, Carlos; López Valdés, Francisco José (2022-10-04). -
Accidents of motorcyclists against roadside infrastructure
López Valdés, Francisco José; García López, David; Pedrero Muriel, David; Moreno de Castro, Jose Luis (Sin editorial (Dublín, Irlanda), 01/07/2005)Powered two wheelers (PTWs) riders are one of the most vulnerable groups of road users. Roadside barriers work quite effectively for passenger cars, but sometimes they are dangerous for motorcyclists, especially guard-rails. ... -
ADAS and sensor technology
Carnicero López, Alberto; López Valdés, Francisco José (09/09/2024) -
Analysis of occupant kinematics and dynamics in nearside oblique impacts
López Valdés, Francisco José; Juste Lorente, Oscar; Maza, Mario; Pipkorn, Bengt; Sunnevang, Cecilia; Lorente Corellano, Ana; Aso, Alberto; Davidsson, Johan (02/09/2016)Estudio sobre impactos oblicuos -
Analysis of occupant kinematics and dynamics in nearside oblique impacts
López Valdés, Francisco José; Juste Lorente, Oscar; Maza Frechín, Mario Vicente; Pipkorn, Bengt; Sunnevang, Cecilia; Lorente Corellano, Ana I.; Aso Vizán, Alberto; Davidsson, Johan (12/09/2016)OBJECTIVE: The objective of this article is to analyze the kinematics and dynamics of restrained postmortem human surrogates (PMHS) exposed to a nearside oblique impact and the injuries that were found after the ... -
Analysis of the spinal 3D motion of post-mortem human surrogates in nearside oblique impacts
Piqueras Lorente, Ana; Pipkorn, Bengt; Iraeus, Johan; Lorente Corellano, Ana I.; Juste Lorente, Oscar; Maza Frechín, Mario Vicente; López Valdés, Francisco José (2023-01-02)Objective: The objective of this study is to analyse the 6 degrees of freedom (DOF) motion of the spine using the finite helical axis (FHA) in three post-mortem human surrogates (PMHS) sled tests. Methods: The sled test ... -
Analyzing traffic conflicts and the behavior of motorcyclists at unsignalized three-legged and four-legged intersections in Cartagena, Colombia
Ospina Mateus, Holman; Quintana Jiménez, Leonardo Augusto; López Valdés, Francisco José (2023-10-01)Introduction The global motorcycle market has grown significantly, with over 770 million vehicles estimated to be in use worldwide. Motorcycle-related road traffic deaths in low and middle-income countries (LMICs) like ... -
Are Electric Cars Safe? A Descriptive Analysis of the first collisions reported in Spain
López Valdés, Francisco José; Ruiz López-Guerrero, Roberto; Frías Marín, Pablo; Román Úbeda, Jaime; Seguí Gómez, MaríaAnálisis descriptivo de la siniestralidad de vehículos eléctricos en España según los datos publicados por la DGT en el periodo 2014-2016 -
Are electric cars safe? A descriptive analysis of the first collisions reported in Spain
López Valdés, Francisco José; Ruiz López-Guerrero, Roberto; Frías Marín, Pablo; Román Úbeda, Jaime; Seguí Gómez, María -
Assessment of an innovative seat belt with independent control of the shoulder and lap portions using THOR tests, the THUMS model, and PMHS tests
Pipkorn, Bengt; López Valdés, Francisco José; Juste Lorente, Oscar; Insausti, Ricardo; Lundgren, Christer; Sunnevang, Cecilia (02/09/2016)Evaluación de sistemas de retención innovadores -
Assessment of an innovative seatbelt with independent control of the shoulder and lap portions using THOR tests, the THUMS model and PMHS tests
Pipkorn, Bengt; López Valdés, Francisco José; Juste Lorente, Oscar; Insausti Serrano, Ricardo; Lundgren, Christer; Sunnevang, Cecilia (12/09/2016)Objectives: The objective of this study was to determine the potential chest injury benefits and influence on occupant kinematics of a belt system with independent control of the shoulder and lap portions. Methods: This ... -
Assessment of in situ chest deflection of post mortem human subjects (PMHS) and personalized human body models (HBM) in nearside oblique impacts
Piqueras Lorente, Ana; Pipkorn, Bengt; Iraeus, Johan; Maza Frechín, Mario Vicente; López Valdés, Francisco José (2022-03-29)Objective The present study has three objectives: First, to analyze the chest deflection measured in nearside oblique tests performed with three post mortem human subjects (PMHS). Second, to assess the capability of a HBM ... -
Assessment of madymo active human body model kinematics and dynamics by means of human volunteer response at low-speed frontal impacts
Valdano, Manuel; Jiménez Octavio, Jesús Ramón; Vives Torres, Carmen María; López Valdés, Francisco José; Pipkorn, BengtThe aim of this study was to evaluate the capability of the Madymo active HBM to predict the human response by comparing the predictions from the model with the response from human volunteers in frontal-impact tests at ... -
Assessment of the sensitivity of thoracic injury criteria to subject-specific characteristics using human body models
Piqueras Lorente, Ana; Iraeus, Johan; Pipkorn, Bengt; López Valdés, Francisco José (2023-12-31)Introduction: Chest deformation has been proposed as the best predictor of thoracic injury risk in frontal impacts. Finite Element Human Body Models (FE-HBM) can enhance the results obtained in physical crash tests with ...