Sep 03, 2025
Pile load test instrumented using Distributed Optical Fibre Sensing (DOFS) offers a superior ability to assess pile capacity through continuous strain
Apr 29, 2026
Abstract This paper reports the use of optical fiber Bragg-grating (FBG) sensors to monitor the stress waves generated below ground during pile
Nov 07, 2025
Interest on the instrumented pile load test using Distributed Fibre Optic Strain Sensor (DFOSS) has become a main discussion topic among engineers in the geotechnical field. Limitation
Jul 02, 2026
In this study, distributed fibre optic sensing (DFOS) cables, embedded in a pile during concreting, are used to measure the changes in
Jul 31, 2025
In this study, distributed fibre optic sensing (DFOS) cables, embedded in a pile during concreting, are used to measure the changes in concrete curing temperature profile to infer concrete cover thickness
Aug 10, 2025
The optical fibre cable used for the bored pile is as shown in For instrumented test pile, DFOS is used to measure strain, which is Figure 4. The single core single
Jul 28, 2025
Fibre optic cables were also installed in an adjacent borehole to capture ground heave during demolition. Together, these outputs provided vital information about the performance of the existing
Jun 23, 2026
The fibre optic cables used for both DFOS and FBG are not much different to standard telecommunication cables. However, pile hammering or concrete pouring can be particularly harsh
May 28, 2026
This test pile was instrumented with new monitoring technique using distributed strain sensing known as Brillouin Optical Time Domain Analysis
Feb 18, 2026
Using fibre optic sensing, key insights could be gained into both the structural and geotechnical response of these piles at large base and shaft resistances, facilitating changes to CPT-based pile
Sep 18, 2025
Presented in this paper is some first-hand fibre optic data collected from axial load tests on piles founded in dense to very dense sand, ranging from driven piles to screw displacement piles.
Mar 05, 2026
Recently distributed fiber optic sensing (DFOS) technologies provide a powerful tool for geotechnical monitoring by enabling distributed and automatic strain measurement along fiber optic
Mar 08, 2026
The embedded fibre optic cable with breakages only permits the use of BOTDR, which poses challenges for the safe installation of fibre op- tic cables on site.
Feb 11, 2026
Several lessons were learnt from the application of distributed fibre optic sensors in piles, such as installation methods, influence of temperature, and performance of fibre optic...
Jan 24, 2026
The Brillouin optical time-domain reflectometry fiber optic strain sensing system is able to provide distributed strain sensing along the entire length of the cable, enabling the full strain profile to
Feb 17, 2026
By installing distributed fibre optic strain sensing cables, continuous strain profile and deflection curve throughout the pile can be obtained.
Jan 16, 2026
Abstract Distributed fiber optic sensing (DFOS) offers a transformative approach for monitoring geotechnical structures by providing
Jan 07, 2026
How will you test the pile loading capacity and behavior for your project? Let us help you decide how this technology will provide the data you need to reduce risk and
Sep 15, 2025
This paper gives an overview over industrial applications of distributed fiber-optic strain sensing in structural health monitoring, outlining both the benefits of the technology and its
May 28, 2026
The integrity of FO cables can be tested using a handheld optical time domain reflectometer (OTDR), which measures the attenuation rate along the length of an optical fibre and identifies the location of
Apr 17, 2026
The CFA pile was subjected to a static loading test. The distributed fibre optic analyser measured the spectral shift in the fibre Rayleigh scatter to obtain strain and temperature data.
Nov 05, 2025
The DOFSS uses a BOTDA interrogator and fibre optic cables in contrast to the conventional Pile Load Testing method that uses Vibrating Wire
Nov 06, 2025
Distributed Optical Fibre Strain Sensing (DOFSS) instrumented pile load test yields a continuous strain profile along the pile shafts by Brillouin Optical Time Domain Analysis (BOTDA)
Nov 07, 2025
Distributed fiber optic sensors can also be accomplished to obtain strain profiles along piles during pile driving, which is helpful to reveal the failure mechanism of displacement piles [19, 24].
Oct 06, 2025
The integrity of cast-in-place foundation piles is a major concern in geotechnical engineering. In this study, distributed fibre optic sensing (DFOS)
Jun 29, 2026
This study investigates the application of BOFDA distributed
Mar 19, 2026
In this study, distributed fibre optic sensing (DFOS) cables, embedded in a pile during concreting, are used to measure the changes in concrete curing
Sep 25, 2025
CSIC installed two fibre optic cables on the test pile, one for measuring strain and the other temperature. The two cables were installed side-by-side to enable the removal of any unrelated temperature effects.
May 21, 2026
An optical fibre cable is installed along the depth of the pile which serves as a sensor itself, as it provides distributed strain data every 5-10cm
Mar 13, 2026
By installing distributed fibre optic strain sensing cables, continuous strain profile and deflection curve throughout the pile can be obtained.
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