METHOD AND APPARATUS FOR DAMAGE DETECTION IN PIPELINES USING NON-CONTACT ELECTRICAL-MAGNETIC-VIBRATION-ULTRASONIC INTERACTIONS

The present disclosure provides pipe scanning systems suitable for integrity and reliability inspection of pipelines via detection of nonlinear interactions between high frequency (HF) resonating waves and low frequency (LF) resonating waves generated within the pipeline. The pipe scanning system may include resonation generating devices to generate HF and LF resonating waves within a pipeline as well as sensors. The sensors may be configured to detect nonlinear interactions between HF and resonating wave modalities within in the pipeline which occur when pipeline wall defects are exposed to HF and LF resonating wave modalities simultaneously. The pipe scanning systems may calculate damage parameter values based on the detected nonlinear interactions and detect locations of pipeline wall damage based on the calculated damage parameter values. The pipe scanning techniques described herein provide improved sensitivity of defect detection and reduced false alarm rate compared to existing techniques for pipeline integrity inspection.