About the Authors

Luis Romero

lromero@ind.uned.es

Affiliation Department of Construction and Fabrication Engineering, National Distance Education University (UNED), Madrid, Spain

Mariano Jiménez

Affiliation Department of Mechanical Engineering, Technical School of Engineering—ICAI, Comillas University, Madrid, Spain

María del Mar Espinosa

Affiliation Department of Construction and Fabrication Engineering, National Distance Education University (UNED), Madrid, Spain

Manuel Domínguez

Affiliation Department of Construction and Fabrication Engineering, National Distance Education University (UNED), Madrid, Spain

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: LR MJ MME MD. Performed the experiments: LR MJ. Analyzed the data: LR MJ MME MD. Contributed reagents/materials/analysis tools: LR MJ MME MD. Wrote the paper: LR MJ MME MD.