&lt;title&gt;SMART Layer and SMART Suitcase for structural health monitoring applications&lt;/title&gt;

Lin, Mark W.; Qing, Xinlin; Kumar, Amrita; Beard, Shawn

doi:10.1117/12.429646

Cited by 129 publications

(126 citation statements)

References 4 publications

Supporting

Mentioning

120

Contrasting

Order By: Relevance

“…A commercial product, SMART Layer ® from Accellent Technologies, Inc., was used to transform the acoustic waves into electrical signals. 4 The SMART Layer consisted of four piezoelectric transducers arranged in a square pattern, 127 mm on each side, with embedded wiring in a thin dielectric film as shown in Fig. 1.…”

Section: Experimental Test Apparatus and Setupmentioning

confidence: 99%

Structural Health Monitoring and Impact Detection Using Neural Networks for Damage Characterization

Ross¹

2006

47th AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference

6
0
8
0

View full text Add to dashboard Cite

Detection of damage due to foreign object impact is an important factor in the development of new aerospace vehicles. Acoustic waves generated on impact can be detected using a set of piezoelectric transducers, and the location of impact can be determined by triangulation based on the differences in the arrival time of the waves at each of the sensors. These sensors generate electrical signals in response to mechanical motion resulting from the impact as well as from natural vibrations. Due to electrical noise and mechanical vibration, accurately determining these time differentials can be challenging, and even small measurement inaccuracies can lead to significant errors in the computed damage location.

show abstract

Section: Experimental Test Apparatus and Setupmentioning
confidence: 99%

Structural Health Monitoring and Impact Detection Using Neural Networks for Damage Characterization
Ross¹
2006
47th AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference
6
0
8
0
View full text Add to dashboard Cite

show abstract

“…ABSTRACT see report 15. SUBJECT TERMS the permanently integrated piezoelectric elements (either embedded or surface-mounted) as actuators and sensors to excite the structure and capture the corresponding structural response [4]. A piezo element is first used as an actuator to input a diagnostic stress wave.…”

Section: Supplementary Notesmentioning
confidence: 99%

Monitoring the integrity of filament-wound structures using built-in sensor networks
Lin
¹
,
Kumar
²
,
Qing
³

et al. 2003
SPIE Proceedings
Self Cite
18
0
13
0
View full text Add to dashboard Cite

Monitoring the integrity of filament wound composite structures such as solid rocket motors and liquid fuel bottles is important in order to prevent catastrophic failures and to prolong the service life of these structures. To ensure the safety and reliability of rocket components, they require frequent inspection for structural damages that might have occurred during manufacturing, transportation, and storage. The timely and accurate detection, characterization and monitoring of structural cracking, delamination, debonding and other types of damage is a major concern in the operational environment. Utilization of a sensor network system integrated with the structure itself can greatly reduce this inspection burden through fast in-situ data collection and processing. Acellent Technologies, Inc. is currently developing integrated structural monitoring tools for continuous monitoring of composite and metal structures on aircraft and spacecraft. Acellent's integrated structural monitoring system consists of a flexible sensor/actuator network layer called the SMART Layer, supporting diagnostic hardware, and data processing/analysis software. Recently, Acellent has been working with NASA Marshall Space Flight Center to develop ways of embedding the SMART Layer inside filament wound composite bottles. SMART Layers were designed and manufactured for the filament wound bottles and embedded in them during the filament winding process. Acellent has been working on developing a complete structural health monitoring system for the filament wound bottles including data processing tools to interpret the changes in sensor signal caused by changes in the structural condition or material property. A prototype of a filament wound composite bottle with an embedded sensor network has been fabricated and preliminary data analysis tools have been developed.

show abstract

“…The easiest connectivity solution is to use wires and a number of strategies for ultrasonic composite SHM based on wired transducers have been investigated [13,14]. The main limitation of a wired system is that a large number of conductive routes and also transducer control units such as multiplexers need to be integrated into the structure.…”

Section: Introductionmentioning
confidence: 99%

Remote inspection system for impact damage in large composite structure
Zhong¹,
Croxford²,
Wilcox³
2015
Proc. R. Soc. A.
25
0
31
0
View full text Add to dashboard Cite

A significant opportunity for reducing the weight of composite aircraft is through the development of an economically efficient method to detect barely visible or invisible impact damage sustained in service. In this paper, a structurally integrated, inert, wireless system for rapid, large-area impact damage detection in composite is demonstrated. Large-area inspection from single sensors using ultrasonic-guided waves is achieved with a baseline-subtraction technique. The wireless interface uses electromagnetic coupling between coils in the embedded sensor and inspection wand. Compact encapsulated sensor units are built and successfully embedded into composite panels at manufacture. Chirp-based excitation is used to enable single-shot measurements with high signal-torandom-noise ratio to be obtained. Signal processing to compensate for variability in inspection wand alignment is developed and shown to be necessary to obtain adequate baseline subtraction performance for damage detection. Results from sensors embedded in both glass fibre and carbon fibre-reinforced composite panels are presented. Successful detection of a 10 J impact damage in the former is demonstrated at a range of 125 mm. Quantitative extrapolation of this result suggests that the same level of impact damage would be detectable at a range of up to 1000 mm with an inspection wand alignment tolerance of 4 mm.

show abstract

<title>SMART Layer and SMART Suitcase for structural health monitoring applications</title>

Cited by 129 publications

References 4 publications

Structural Health Monitoring and Impact Detection Using Neural Networks for Damage Characterization

Structural Health Monitoring and Impact Detection Using Neural Networks for Damage Characterization

Monitoring the integrity of filament-wound structures using built-in sensor networks

Remote inspection system for impact damage in large composite structure

Contact Info

Product

Resources

About