Construction Stress Monitoring Using a Wireless Sensor Network to Evaluate Reuse Potential of Structural Steel

Sensors for Structural Health Monitoring of Agricultural Structures

“…The maximum tension for short columns is 97 MPa; this contrasts with 21 MPa for the girders. Similar differences were reported in the optimal compressive strength [ 76 ]. The main challenge is linking high exposure to compressive and tension forces and the risk of structural damage, given that each component is reinforced to handle different loads.…”

“…The corrosion rate could be higher depending on humidity, temperature, and the presence or absence of a protective coating. Apart from the chemical-induced corrosion, the temperature is a critical variable because it triggers greater magnitudes of flexural stress in the structural columns [ 76 ], which might result in structural failure.…”

“…Secondary issues include Raman, Brillouin, and Rayleigh backscattering. On a positive note, the constraints can be resolved by integrating two fiber optic sensors (reference and measurement sensors) [ 76 ]. The fiber optic sensor measurements are less susceptible to electromagnetic interferences and are characterized by higher sensitivity and low costs.…”

“…Since the shortcomings are poorly delineated, the decision to install wireless sensors in structural health monitoring and related applications should be guided by existing empirical data on the data platforms, data acquisition specifications, embedded computing specifications, data memory, wireless channel specifications, and simulations. The need for comprehensive data before deployment is supported by wireless sensors’ susceptibility to damage caused by strain and temperature interdependence—a phenomenon that is influenced by Brillouin and Rayleigh backscattering [ 76 ].…”

Predicting the technical reusability of load-bearing building components: A probabilistic approach towards developing a Circular Economy framework

“…Similarly, [20] used wireless sensors to monitor the stresses induced during the construction of a steel-framed building to evaluate the reusability of steel members. According to this study, the authors observed that the maximum measured stresses were almost half of the nominal yield strength, confirming that the current design practices allow the reuse of structural steel (see also [21] for similar studies in different systems and industries).…”