Welcome to Acta Armamentarii ! Today is

Acta Armamentarii ›› 2023, Vol. 44 ›› Issue (12): 3771-3782.doi: 10.12382/bgxb.2023.0291

Special Issue: 爆炸冲击与先进防护

Previous Articles     Next Articles

Machine Learning-based Models for Predicting the Penetration Depth of Concrete

LI Meng1, WU Haijun1, DONG Heng1,*(), REN Guang1, ZHANG Peng2, HUANG Fenglei1   

  1. 1 State Key Laboratory of Explosive Science and Technology, Beijing Institute of Technology, Beijing 100081, China
    2 No.660 Institute of Hongdu Aviation Industry, AVIC, Nanchang 330024, Jiangxi, China
  • Received:2023-03-31 Online:2023-12-30
  • Contact: DONG Heng

Abstract:

The test data about concrete penetration are often limited in quantity and unevenly distributed, which leads to the poor accuracy of machine learning-based models for predicting the penetration depth. This study aims to mitigate the unevenness of data distribution and increase the amount of available data to obtain an optimal machine learning model under the limitation of limited penetration test data. Based on collecting a large amount of penetration test data, the penetration data are extended by data augmentation methods such as linear interpolation and adding Gaussian noise. The genetic algorithm and greedy algorithm are used to optimize the hyperparameters of four common machine learning models: multilayer perceptron, radial basis neural network, support vector regression and extreme gradient boosting tree. The prediction of concrete penetration depth based on machine learning is realized. Sensitivity analysis method is used to analyze the influence of input factors on the penetration depth. The results show that the problem of insufficient data can be effectively alleviated by using linear interpolation and adding Gaussian noise. The accuracies of multilayer perceptron, radial basis neural network, support vector regression and extreme gradient boosting tree are improved by 2.49%, 0.99%, 0.74%, and 0.72%, respectively, after using data augmentation. The diameter, impact velocity and mass of projectile have the dominant influence on penetration depth. In addition, the average error of the optimal concrete penetration depth prediction machine learning model is 8.28%, and its global accuracy is better than the commonly used empirical formulas for predicting the penetration depth.

Key words: penetration depth of concrete, machine learning, neural network, data augmentation, sensitivity analysis

CLC Number: