Device configured to detect the structural integrity of a sample object, comprising: - a beating element configured to impart a mechanical stress of the impulsive type on said sample object; - a rigid inertial body configured to support said sample object and to counteract rigidly said mechanical stress; - acquisition means to monitor a response signal from at least said stressed sample object and operatively associated at least with said inertial body; - an exciting body able to act on said sample object, said sample object being operatively connected with said acquisition means, said beating element being such as to impart a mechanical stress to said sample object impacting on said exciting body; wherein said acquisition means comprise at least one transducer configured to detect a response signal from said sample object and/or from said exciting body in an operating configuration of use of said device, said response signal being a signal containing at least one vibration frequency of the sample object, characterized in that said exciting body and said sample object are respectively configured to provide a mass-spring system supported by said inertial body and wherein said spring of said system is the sample object subjected to testing, wherein said exciting body has an impact surface configured to impact said beating element and a transmission surface configured to contact a respective surface of said sample object in an operating configuration of use of said device, wherein when said mass-spring system consisting of the sample object and the exciting body is excited by the impulsive mechanical stress of the beating element, said mass-spring system supplies in feedback to the acquisition means a response signal containing at least a vibration frequency of the sample object, further wherein said device comprises a processor configured to analyze a resonance frequency of said sample object subjected to testing following mechanical stress and to detect the presence of not only a maximum peak in the development of the resonance frequency, but also one or more minor peaks as well, correlating at least the overall number of peaks, maximum and minor, and possibly their entity, to the structural integrity of said sample object. - a beating element configured to impart a mechanical stress of the impulsive type on said sample object; - a rigid inertial body configured to support said sample object and to counteract rigidly said mechanical stress; - acquisition means to monitor a response signal from at least said stressed sample object and operatively associated at least with said inertial body; - an exciting body able to act on said sample object, said sample object being operatively connected with said acquisition means, said beating element being such as to impart a mechanical stress to said sample object impacting on said exciting body; characterized in that said exciting body and said sample object are respectively configured to provide a mass-spring system supported by said inertial body and wherein said spring of said system is the sample object subjected to testing, wherein said exciting body has an impact surface configured to impact said beating element and a transmission surface configured to contact a respective surface of said sample object in an operating configuration of use of said device, wherein when said mass-spring system consisting of the sample object and the exciting body is excited by the impulsive mechanical stress of the beating element, said mass-spring system supplies in feedback to the acquisition means a response signal containing at least a vibration frequency of the sample object, further wherein said device comprises a processor configured to analyze a resonance frequency of said sample object subjected to testing following mechanical stress and to detect the presence of not only a maximum peak in the development of the resonance frequency, but also one or more minor peaks as well, correlating at least the overall number of peaks, maximum and minor, and possibly their entity, to the structural integrity of said sample object.