This paper concentrates on analyzing the stability problems of aperiodic sampled-data systems with time delay. Based on Lyapunov theory. a new time-square-dependent two-side looped-functional (TTLF) is proposed. which can take full advantage of the second order terms with respect to time. https://safeersappliancers.shop/product-category/siemens-gi11vaf30-iq500-56cm-wide-integrated-upright-in-column-freezer/